Derek and Erica

Erica became incredibly loyal to Derek for giving her power that she always sought, as the Bite enhanced her confidence
Erica made out with Derek once but he rejected her and instead wanted her to seduce Scott to try to recruit him for the pack
Erica helped Derek and the rest of her pack deal with the Kanima and the Hunters
Both cared deeply for each other
Erica and Boyd departed from Derek's pack when the threats in Beacon Hills became too great to handle
Erica endured hours of torture at the hands of Gerard Argent to protect Derek
Derek refused to believe Erica was dead until he found her dead body in the Alpha Pack's hideout
Derek continued to mourn Erica's death until he himself died to defeat the Nogitsune for good

### Ship Name

Derica, Haleyes

**The relationship between Werewolves Derek Hale and Erica Reyes.**

In the days following his ascension to Alpha Werewolf status, Derek was searching for teenagers for him to recruit and turn into Werewolves, particularly those who found themselves lacking power in their lives, whether it be physical power, personal power, or the power of a support system of friends. It did not take long for him to find Erica, who, at the time, was a shy, epileptic girl struggling with her seizures, a lack of self-confidence, and the resulting bullying from her peers. Learning that Erica refused to take her anticonvulsant medications because of the side-effects, Derek saw her as a great candidate for his pack and guaranteed to her the Bite would give her everything that she had ever wanted, including a cure to her epilepsy, earning Erica's consent to be turned.

Erica went through an amazing physical transformation as a result of her newly gained lycanthropy, and the fact that she felt physically better and stronger reflected on the outside as well, allowing her to develop a healthy self-confidence that she translated into a new "sexy" style of dress. She also quickly became close with Derek and her fellow Betas, Isaac Lahey and Vernon Boyd.

During her time in the Hale Pack, Erica was shown to be steadfastly loyal and complied with Derek's orders without argument or question, as best shown when he sent her and Isaac to kill Lydia Martin when she was believed to be the Kanima. She also seemed to develop an attraction toward her Alpha, but he rejected her advances, instead making it known that he would prefer that she set her sights on Scott McCall, which would benefit the pack in two ways; one, it would make it easier to recruit Scott, who had been resistant to Derek's attempts to get him to join the pack thus far, and two, it would also hopefully end Scott's affair with Allison Argent, who he saw as a threat to the pack's safety due to her status as the heir to the leadership of the Argent Family of Hunters.

After several weeks constantly hunted by the Argents, in conjunction with the ever-growing threat of the Kanima (who was eventually revealed to be their other classmate Jackson Whittemore), Erica and Boyd made the difficult decision to leave Beacon Hills in hopes of joining another pack elsewhere. Unfortunately, they were captured before they even had the chance to leave town, first by Gerard Argent and the then-brainwashed Allison (though they were ultimately released by an uncharacteristically sympathetic Chris Argent within a day), and then again by the newly arrived Alpha Pack, who intended to use the Betas to manipulate Derek into joining their pack, so Scott, who possessed the potential to become an exceptionally rare True Alpha, would be more willing to join them as well.

Derek became concerned with Boyd and Erica's lack of contact over the summer and eventually learned that they were caught by the Alphas, leading him into several months of searching for the two Betas; however, the Beacon Hills packs were in shock when Isaac was put in an ice bath-induced trance and revealed that Erica had been killed by the Alphas, recalling the moment he found her dead body in a closet of the abandoned First National Bank during a reconnaissance mission. Derek refused to accept that Erica was dead until he and Scott (and, unbeknownst to both of them, Allison) infiltrated the bank, punched their way through the vault, and encountered Boyd and the other hostage, who turned out to be Derek's long-lost younger sister Cora Hale. Derek found Erica's body shortly afterwards and carried it back in his arms to show it to Scott and Allison, heart-broken.

Derek was unaware that Kali specifically had been the one to murder Erica until *Currents*, when Kali and the twins Ethan and Aiden forced him to impale and kill Boyd with his claws after he had been weakened by electricity, causing him to absorb Boyd's powers and see through his memories how Erica had taken on Kali to escape from the Alphas' captivity, at the cost of her own life. The deaths of Boyd and Erica shattered Derek tremendously, and the guilt he felt with the loss of his two Betas ultimately led him to give up his Alpha powers to heal Cora from her mistletoe poisoning, reverting him back to Beta status.

In 2026, Derek sacrificed himself for his loved ones, particularly his son Eli, by holding the Nogitsune restrained so Jordan Parrish could incinerate both of them and put an end to the Nogitsune's existence once and for all, causing Derek to join Boyd, Erica and several of his deceased relatives in death.

**Derek and Erica are known as Derica by fans**

## Throughout *Teen Wolf*

* Season 2
* Season 3A

In *Ice Pick*, Derek surreptitiously broke into Beacon Hills Memorial Hospital after Erica had suffered yet-another of her seizures at the high school. After the head nurse Melissa McCall had left Erica's room, Derek wheeled Erica's gurney to the morgue in the hospital, where he read the side-effects of her anti-seizure medications and remarked how bad they were. Horrified, Erica questioned Derek over who he was, but Derek only hinted at the fact that both of them had a common friend: Scott McCall.

He then asked her about the sign she received right before to her seizures, which Erica described as an "aura" or a metallic taste in her mouth that tasted like blood. Derek caressed her head and legs as he pulled her closer to him and used his charm to offer her the means to not only be finally free of her epilepsy and the side-effects of the medications but also to have a better life. Erica asked him how he could do it and Derek flashed his Alpha eyes at her, preparing to give her the Bite.

The next day, everyone was awestruck when Erica made her entrance into the cafeteria as a gorgeous young woman wearing high heels, a mini-skirt and a white top under a leather jacket and she stole a student's apple before walking out of school. Scott and his best friend Stiles Stilinski followed her outside and their suspicions were confirmed when they saw her getting into Derek's Camaro as the two Werewolves smiled dangerously at the former two.

The following day, Scott confronted Erica, demanding to know who was going to become the third Beta in Derek's pack. Once Scott made it clear that he did not have any intention of joining the Hale Pack, which would benefit them since they would not need to turn a third Beta then, Erica proceeded to explain that she accepted Derek's offer because she was tired of feeling weak and detailed the one occasion when she felt most humiliated—their classmates had filmed her while she was having a seizure in class and since the video was put online showing her peeing in front of everyone, she had her confidence and social life ruined.

Hours later, Scott and Stiles realized that their other classmate, Vernon Boyd, would be Derek's next choice to complete his pack and scrambled to find him before he accepted the proposal to become a Werewolf. Stiles went to Boyd's house but nobody answered until Erica showed up to flirt a little with Stiles. She attempted to get him to compliment her looks following taking the transition into a Werewolf and he ultimately commented that she had beautiful eyes, to which Erica agreed, smugly adding, "I have beautiful everything."

Stiles finally complimented Erica on her newly gained appearance and confidence and insisted that he had to go find Boyd but Erica stopped him, insisting that he was not going anywhere. She remarked, "You're having car trouble," as she held up a piece that she had ripped off of his Jeep's system, before knocking him out with it to ensure that he could not interfere in Derek's plans for Boyd. She tossed his unconscious body into a nearby dumpster afterwards and left him there.

When night fell, Scott finally found Boyd working at the ice rink, and wasted no time in asking him if he was willing to join Derek's pack even after he made him aware of everything that he would encounter. Boyd imparted that Derek spoke of the Hunters that had infiltrated Beacon Hills and divulged that he would still take the transformation to end his reputation as the loner who sat at lunch alone every day. Scott told him that there were much better ways of gaining friends, with Derek's not being the best example.

The two were surprised when Derek, Erica and Isaac Lahey revealed themselves and an offended Derek advised Scott that he should listen to Isaac and Erica's opinions about their newly gained powers before criticizing him. Erica admitted that her life became transformative after meeting Derek and she proceeded to emphasize her point by manifesting her fangs and roaring at Scott. Although Isaac admitted that he was a little upset for having recently become a fugitive of the law, he commented that he felt greater than ever above all else, supporting Derek's belief that any human would desire their kind of power. A nervous Scott pointed out that it was not a fair fight, which led a smug Derek to instruct Scott to go home then before sending his new Betas after the young Omega. Scott wolfed-out and insisted that he meant that the fight was not fair for Erica and Isaac.

Despite their combined efforts, Erica and Isaac were unable to defeat Scott given the fact that he had been a Werewolf for much longer than the two of them and had much better skill in combat. Once he had incapacitated the two rookie wolves, Scott attempted to tell them that Derek only cared for them as long as they gave him more power before he slided them across the rink to land at Derek's feet. Derek confirmed Scott's allegations about power and joined the fight, beating the young Beta to a bloodied pulp and leaving him wounded on the rink. Boyd approached the beaten Scott to reveal that he had already received the Bite from Derek and confirmed Scott's beliefs—he was not interested in becoming like Derek, Isaac and Erica but more like Scott.

In *Abomination*, Derek held up a training session in his new lair at Railway Depot to help Erica and Isaac improve their fighting skills, mainly due to their poor performance against Scott earlier at the ice rink, while Boyd remained on the sidelines observing the training. Isaac kept using the same acrobatic maneuveurs again and again while Erica attempted to catch her Alpha by surprise by jumping from a platform onto him but Derek constantly shoved them to the ground. Disappointed, Derek suggested they try something less predictable, prompting Erica to throw herself at him and kiss him for several seconds. Derek kissed her back before shaking her off him and demanding her to never repeat such thing that again. Erica, embarrassed, assumed it was because she was a Beta but Derek corrected her, saying he had someone else in mind for her, the then-Omega Scott, who was still in a relationship with Allison Argent, whose family was a threat to their pack.

Isaac asked Derek if they could take a break because he had "about a hundred" bones that needed hours to heal. Derek initially seemed to sympathize with him but at the last moment, he broke Isaac's arm and looked at him in the eyes to asseverate that the Hunters would not let them rest when they were currently at war with them. He also brought up the arrival of the mysterious shapeshifter that had killed Isaac's father, an Argent Hunter and, finally, a mechanic the previous night. Derek went on to tell the three new wolves that they had to learn everything he knew as fast as possible, at least until they figured out exactly what kind of creature they were dealing with.

Erica was watching the semi-final lacrosse game with Boyd up until one of the players of the opposing team known as "The Abomination" injured one of their players. When Coach Finstock required one more player so they wouldn't have to forfeit, Erica attempted to forbid Boyd from showing off his Werewolf skills like Derek told them but Boyd joined the team anyway and used his enormous size, body build and Werewolf physical attributes to help the Cyclones win the game.

At somepoint during the game, Erica had left the stands and caught Stiles in the principal's office searching for the Argents' Bestiary so it could help him and the others learn more about the new shapeshifter. She dragged him to the school's indoor swimming pools for Derek to interrogate Stiles about the shapeshifter that had paralyzed him and the mechanic working on his Jeep several days earlier. In his typical sarcastic manner, Stiles remarked having seen a lot of EPA violations that he would like to report to the authorities but Derek, certainly not in the mood for jokes, punctured a basketball in his hands to make the teen collaborate with him, a method that left Stiles uncomfortable but it made him talk about what he really saw.

Stiles described it as a slick creature with black, patterned scales, rows of sharp teeth, yellowish eyes and a tail as Derek and Erica stared at the stands above them, horrified to see the creature was right above them. The lizard came down to attack, knocking Erica unconscious and paralyzing Derek with its venom by clawing the back of his neck, leaving Stiles with no choice but to throw Derek and himself into the swimming pool while Stiles kept Derek afloat due to the latter's paralysis. They figured out that the water kept the creature at bay for unknown reasons when it got scared by touching the water.

Two hours later, Scott finally arrived from his dinner with the Argents and scared away the lizard creature. Derek and Erica met with Scott and Stiles outside the school and the Hale Alpha revealed that the lizard was a Kanima, a mutated version of a Werewolf. He deduced such thing from the Kanima's fear of its own reflection and cryptically stated having heard rumors and myths about it. Although Kanimas and Werewolves were both shapeshifters, Kanimas were more like "Abominations" like Stiles put it.

Just when he and Erica were about to leave, Derek was appalled when Scott recommended seeking help from the Argents because he believed it was the best strategy to face the monster that seemed to be stronger and faster than either of them, not to mention their lack of knowledge regarding their newest enemy. Derek refused to work with Hunters that were responsible in the decimation of his family and assured Scott and Stiles that he would kill the Kanima once he found out who it was.

In *Venomous*, Derek sent Erica to track down Jackson Whittemore, whom Derek had begrudgingly bitten at the end of Season 1's Code Breaker right after becoming an Alpha, in hopes of testing him to see if had become the Kanima. She found him in the high school's locker room working out with his best friend Danny Mahealani and demonstrating more supernatural powers such as a heigthened sense of hearing, though he was under the impression that his transformation into a Werewolf was happening slower for unknown reasons after he had showed signs of rejecting the Bite back in Omega. Danny left to take a shower while Jackson was desperate to prove that he could lift much more weight than he was supposed but the weight could have fallen on top of him hadn't Erica showed up. He initially thought it was Danny who helped him but he opened his eyes to see that Erica was there and she wasted no time in grabbing Jackson by the throat.

She brought him back to Railway Depot and restrained him along with Isaac as Derek asked Jackson what had happened at the night of his first full moon back in Shape Shifted. Jackson, having been frustrated lately because he did not transform into a Werewolf as expected, bitterly replied that nothing happened, but Derek could listen to his heartbeat and determine he was lying to them. Jackson insisted that he could prove he was being honest and asked them to allow him to go home and pick up the video he had made of himself sleeping through the whole night of the full moon, even though he knew the video was missing two hours of footage. Derek and Isaac sneered at Jackson for videotaping himself, angering the co-captain of the lacrosse team to the point that he ranted at his neighbour Isaac that he had been preparing for the "gift" Derek promised him while Isaac was "curled into the corner suffering an existential crisis about turning into a "monster"", but Jackson apparently ended up getting nothing and reiterated that he could get the video at his house.

Derek denied Jackson's request and insisted he had a better way in his mind. While Erica and Isaac restrained Jackson, Derek put up some gloves and revealed a shard of glass left from the battle between Scott and the Kanima. Derek pointed out that Jackson had always been some kind of snake and they all knew a snake couldn't be poisoned by its own venom. Derek managed to allow a single drop of Kanima Venom fall from the shard of glass into Jackson's mouth and forced him to swallow it but he became paralyzed like the other victims. Nevertheless, Derek guaranteed Jackson that he was still a snake-- he just was not the snake they were looking for. He walked away and moved on to his next suspect: Lydia Martin, who had been bitten by his uncle Peter Hale when he was still the Alpha.

The next day, Isaac forced Jackson to confront Sheriff Stilinski and remove his testimony of witnessing Isaac fight with his father at the night of the latter's death, allowing him to return to school. While in the hallway, Jackson's superhuman hearing allowed him to hear Isaac and Erica's latest plan—testing and, if necessary, kill Lydia by using Kanima Venom just like they did with Jackson the previous night. The class involved the students working in pairs to create sugar crystals and switching partners over the experience.

Erica took advantage of the fact that she was partnered with Scott to seduce him as part of Derek's plan to get Scott to join his pack and she caressed his thigh to make Allison jealous as she claimed that if she were Allison, she would be wanting Scott all the time but Scott remained resistant to Erica's attempts to turn him against Allison, insisting that Erica was not "his type." She was then partnered with Allison and taunted her about her relationship with Scott not going to last for long, even challenging her to a "girl fight" in the lab that would be "hot". When Lydia was paired with Isaac, she unknowingly licked a sugar crystal that Erica and Isaac had secretly covered with Kanima Venom and proved to be unaffected by it, convincing Derek and the others that she was the Kanima.

Despite Scott's best arguments to dissuade him and his pack from killing Lydia, Derek insisted that Lydia was too much of a threat to all of them and they had to put her down to keep her from murdering more innocent people or even one of themselves. He even refused to believe in Scott's theories that Lydia could be immune to the supernatural, arguing that such thing was never seen or heard before. Fortunately, Scott had a Plan B and asked Stiles and Allison to take Jackson and Lydia to the McCall House, in the guise of a study group, while he had to remain at school for a little longer. The Hale Pack members tracked them there and Erica and Isaac were ordered to break into the house to incapacitate the others and kill Lydia while Derek remained outside with Boyd.

Scott arrived in the nick of time to overpower and knock Isaac out to prevent him from hurting Stiles. Upstairs, Erica yet again teased Allison over her complicated relationship with Scott and easily caught an arrow that the Huntress fired at her, giggling at Allison's seemingly foolish move; however, what she failed to realize was that she had just touched an arrow covered with Kanima Venom and Erica only realized such thing seconds before the paralysis kicked in and rendered her immobile, leading a satisfied Allison to whisper to Erica's ear, "I thought you were psychic, bitch." Scott tossed Isaac and Erica outside to land at Derek's feet, forcing the somewhat-embarrassed Derek to admit that Scott was not an Omega—he was already the Alpha of his own pack. Though he made it clear that Scott and his friends couldn't beat him personally, Scott countered that he had enough strengths to hold Derek until the cops arrived.

All of them witnessed the Kanima climbing up the roof of the McCall House and it hissed at them menacingly before it made his way into the town. Derek instructed Boyd to take Isaac and Erica back to their lair but before they could leave, Lydia came out of the front door to demand, "Somebody, please tell me what the hell is going on?", leading everybody present to realize that the Hale Alpha was wrong and Jackson had really become the Kanima, though Derek nor his packmates were aware of this developpment.

In *Restraint*, Derek was astonished to learn that the Kanima was still living after he thought he had killed it by slashing its throat. He turned his attention to Erica and sent her to get on the good side of either Scott or Stiles or both in hopes that they knew the Kanima's identity (as he was not aware that Jackson was in the McCall House with the others). He opened up a trunk full of chains and others restraints that were meant to lock the neophyte Werewolves during the next full moon, with Erica sarcastically remarking, "Ooh, these look comfortable."

Isaac warned Derek that the next full moon was coming and he would be alone to face the Hunters while Isaac, Erica and Boyd would be all locked up. He believed that dealing with the Argents was the bigger issue at hand and suggested they forget the Kanima problem, a suggestion that was viciously turned down due to Derek's fears that Gerard Argent had some plans with the Kanima, given the way they looked at each other the previous episode.

Scott and Stiles carried Erica back to Railway Depot after Jackson had paralyzed her with his Kanima Venom and caused her to have a seizure for the first time since her transformation. Concerned for her life, Derek broke her arm to push the venom out of her system and re-trigger her healing ability, saving her. Scott confirmed to Derek that Jackson was the Kanima and reluctantly accepted joining his pack so they could use their combined efforts to save him, but they would do things his own way.

In *Raving*, Scott, Stiles and Derek visited Alan Deaton at the animal clinic for his guidance to come up with a plan to capture Jackson and finally find out who his master was. Deaton entrusted Stiles with creating a Mountain Ash circle around the rave, where Jackson, his master and their next target would be located. The Mountain Ash was used by many cultures to defend themselves against the supernatural and the substance would not allow neither the Kanima nor the Master to escape as long as the circle remained unbroken.

Inside the rave, Isaac and Erica were given the task to distract Jackson and sedate him with Ketamine to keep him from killing his next target Kara Simmons. Although Jackson's master realized what they were up to and commanded Jackson to claw the two Betas to keep them from foiling his plans for Kara, Isaac and Erica quickly recovered from this attack and managed to sedate Jackson before bringing him to an empty room, where they were soon joined by Stiles. The Kanima Master used his connection with Jackson to speak to the three through the mouth of his servant in order to explain his reasons for sending Jackson to kill all those people, labelling them all "murderers."

When Stiles asked who those people murdered, Jackson's master cryptically responded that they had murdered him, a statement that puzzled Stiles, Erica and Isaac but they had no more time to interrogate Jackson when he demonstrated to be overcoming the effects of the Ketamine faster than expected and started to transform, with his eyes turning reptilian as he repeated "They murdered me." Isaac revealed that he had used the whole vial of Ketamine on Jackson, causing the two wolves and the hyperactive human to leave the room and keep the door shut. However, Jackson, in full-Kanima mode, easily busted out of the room and succeeded in murdering Kara.

Meanwhile, Derek and Boyd confronted Chris Argent and his fellow Hunters outside and managed to take them all down, except for Chris. They were hit with Wolfsbane-laced bullets, forcing Derek to instruct Boyd to take his car and head to the clinic for treatment while he searched for Scott. Derek forced Stiles to break the circle to save Scott from dying. He ultimately found him in a warehouse being slowly poisoned by Victoria Argent with wolfsbane vapor and was forced to fight with Victoria, inadvertently biting her during the struggle.

In *Party Guessed*, Derek was opening up the trunk full of chains and other restraints to lock his Betas up during that night's full moon, which would be Isaac's second and Boyd and Erica's first. Derek asked them if they knew what the symbol on the trunk was and Boyd identified it as a triskelion or triskele. He went on to tell that the spirals were associated to many trio concepts—mother, father, child or past, present, future—before he correctly inferred that for Derek and his family the spirals represented the three ranks of Werewolves: Alpha, Beta, Omega, earning an impressed and proud look from Derek.

Derek emphasized that Werewolves could always rise to one rank or fall to another, with Betas becoming Alphas and Alphas falling to Betas or Omegas. Isaac asked him about Scott being an Omega but Derek assured him that Scott had joined them, only for the skeptical Isaac to ask why Scott wasn't there with them if he really joined their side. Derek defended Scott that he was keeping an eye on Jackson before informing them that the full moon wouldn't be easy for any of them since they would be overcome with the urge of tearing anything in sight apart. Erica smirked and replied that it was a good thing that she had her period last week but quickly became disturbed when Derek pulled out a spiked headband that she would be forced to wear.

The full moon was rising and Derek and his Betas were inside the car, with Derek about to place the headband in Erica. Isaac, concerned about Erica and pointing at the appearance of the headband, asked why she had to wear it; Derek explained that she would be able to endure more pain than Boyd and Isaac thanks to her being a woman, offering his first true Beta an extra headband, which Isaac hastily refused. Isaac restrained Erica while Derek screwed the torturing device in her head, causing her a great deal of pain that earned sympathy from both Isaac and Boyd.

Derek chained Boyd and Isaac afterwards but once the full moon hit its apex, the three teens transformed into their Werewolf forms and managed to break free from their restraints with little difficulty before they started to attack Derek mercilessly. Isaac escaped the car by jumping through the window, leaving Derek to face the rabid Boyd and Erica alone. Surprisingly, when Boyd was about to escape from the car, too, Isaac returned, in full control over himself, and managed to knock Boyd unconscious while Derek did the same with Erica, allowing them to put the two back in their restraints and finish the full moon without further issues.

Although Isaac seemed to be in control over himself, Derek chained him back up just in case and was surprised to learn that Isaac was using his father as his anchor. Isaac admitted that his father used to be caring and loving until the deaths of his brother Camden and his mother affected him so much that he became the abusive man he was shown to be before his own death. Derek left his Betas in the car, only to be surprised by Lydia, who was possessed by Peter's spirit, and she rendered Derek unconscious with Wolfsbane powder to drag him to the Hale House as part of a ritual to bring Peter back from the dead.

In *Battlefield*, Boyd and Erica were walking through the dark woods, as Erica reminded Boyd that Derek wanted them to be back by dawn. They stopped when a howl was heard, and the two wondered if it was from a coyote or a wolf, only for Boyd to assert that there were no wolves in California as confirmed by Stiles in Season 1's Wolf Moon. Erica pointed out that while there were no wolves, Werewolves like themselves were seen in California and they were certain that the howl did not sound like Derek's. Many more howls were heard from all directions, unsettling the two of them and they rushed back to Derek.

They finally arrived at the Hale House, where they found Derek reading through books, presumably searching for a way to end their problem of the Kanima. He looked displeased when he asked them if they decided to leave Beacon Hills and they confirmed that they planned to leave during the lacrosse game occurring that night when everyone else would be too distracted. Boyd and Erica, insecure and concerned for their lives with all the terror occurring in Beacon Hills, admitted to their Alpha that it was a hard choice for them but the fact that the Argents had been searching for them relentlessly for weeks and the Kanima was becoming too powerful to be defeated led them to believe that Beacon Hills was no longer safe for them, with Erica confessing that she would like to acquire her driving license, especially since she had turned sixteen years old the previous month.

Derek reminded them that he had warned them of the dangers that they would face before he gave them the Bite, but Boyd shot back that Derek did not tell them it would be this dangerous. Derek conceded that he had not informed them very well of the downsides of being a Werewolf but taught them that being members of a pack was the only way to survive; it was at that moment that Erica and Boyd expressed their desire to search for another pack and that they could have already found one.

They recounted the howls that they heard earlier and believed that they heard like a dozen of wolves. Derek repudiated this and assumed that they only heard two wolves as he brought up the Beau Geste Effect—the way how two wolves can modulate its howls with a rapid shift in tone to sound like twenty. Erica and Boyd nonchalantly replied that they did not care about it and insisted that they had their minds up. Derek retorted that if they started running, they wouldn't stop running for their lives but the two disregarded their Alpha's warnings and left the House together anyway.

At night, Boyd and Erica realized that the howling was nothing else but a recording used by the Argents to lure them into a trap. They ran through the woods as fast as they could while being chased by Argent and Allison, the latter of whom was consumed with rage and bloodlust toward Derek and his pack, as she blamed them for her mother's death due to being manipulated and convinced of such thing by her grandfather Gerard, who also blamed Derek and his Betas for the death of his daughter Kate, despite the fact that it was actually Peter Hale who had killed Kate.

Chris and Allison eventually caught up to the two young Betas and Allison fired an arrow at Erica, wounding her in the leg. Though she had told Boyd to not worry about her and keep running, he ultimately returned to defend her and prevented Erica from getting killed by an arrow shot at her face by catching it. He wolfed-out in preparation for a fight, though Allison mercilessly fired arrow after arrow that got embedded themselves in Boyd's chest and abdomen. Allison ignored Erica's pleas to stop and when she prepared to fire yet another arrow at Boyd, Argent saw himself forced to shoot his daughter's bow out of her hands, saving Boyd from certain death.

In *Master Plan*, Gerard, who had made Jackson commit suicide by having stab himself with his own claws at the end of the lacrosse game, captured Stiles to reach Scott and get him to deliver Derek to him. He had his cohorts throw the young man into the basement of the Argent House. He realized that he was not alone in the dark basement when mumbling was heard and turned on the lights, finding Erica and Boyd gagged up with their hands suspending from the ceiling and bound to electrical cables that were weakening them and keeping them from escaping.

Stiles shocked himself upon trying to free them and Gerard came down the basement to inform Stiles that he had been torturing the young Betas for a while but their instinct to protect their Alpha was too strong for them to give away Derek's whereabouts. Stiles confidently indicated that Scott would find him by his scent and that he could find him, even in the bottom of a sewer "covered in fecal matter and urine". Gerard was not impressed with Stiles' ability to "paint a vivid picture" and proceeded to beat up Stiles as a warning to Scott while Boyd and Erica were forced to watch this incapable to help.

Hours later, Argent came down the basement and explained to Boyd and Erica that his family had been hunting and studying Werewolves for centuries. They learned that the lowest levels of electricity could keep a Werewolf from transforming and suppress their healing factors, whereas higher voltages disabled their superhuman strength and the highest could kill them. Realizing that his father Gerard was the real threat after seeing how he molded his daughter Allison to become a savage Hunter like him, Argent freed Boyd and Erica and allowed them to escape.

In the woods, Erica and Boyd stopped running for a few moments to catch their breaths until they heard howls from true Werewolves. They found themselves surrounded by an unknown Werewolf pack, whose members whipped out their claws, leaving their fate uncertain.

In *Tattoo*, Derek helped Scott make his tattoo of two bands permanent by burning his arm with a torch to repay him for his help in rescuing Isaac from an Alpha at the hospital. When Scott was about to leave, he noticed that the door was painted and used his claws to uncover the symbol of a Trinacria that was painted by the Alpha Pack at the end of the previous episode. Derek was forced to confess to Scott and Stiles that a pack of Alphas infiltrated their hometown and had kidnapped Boyd and Erica, whom he, Isaac and Peter had been searching for the last four months.

In *Chaos Rising*, Derek and Isaac called Peter and summoned him to Derek's loft for him to perform the memory manipulation ritual typically performed by Alpha Werewolves in order to retrieve Isaac's memories of where he had found Erica and Boyd because the Alphas stole his memories of the location after they had captured him and the ritual was a risky one that Derek had never performed before. Peter stuck his claws into the back of Isaac's neck and saw glimpses and figures, one of them was Boyd inside what appeared to be a bank vault and another one was Deucalion apparently catching Isaac spying on him in the lair. Peter confirmed to Derek that Isaac had indeed found Boyd and Erica and overheard a debate between Deucalion and the other Alpha Pack members, who seemed to be planning in killing the two Betas on the next full moon, which would be the next day's night.

With the memory manipulation ritual out of their options, Scott, Stiles, Derek and Isaac consulted Scott's boss and the second closest person that possessed incredible knowledge of Werewolves—Alan Deaton. He suggested a procedure that could help Isaac regain his memories but it was risky—Isaac would be submerged in cold water for his heart-rate be slowed down to the point of a nearly-dead state, allowing the others to have access to his subconscious. Though he was not entirely comfortable with this plan, Isaac ultimately agreed to such thing and was put into a trance, allowing him to relive the day when he found Boyd and Erica while he gave the details of what he was seeing to the others. He eventually saw Deucalion and the other Alphas and their presence made him increasingly agitated, which made Derek to impatiently demand more precise answers to what he was seeing. Isaac remembered being found by Deucalion and then pinned to the ground by Kali prior to being taken captive.

Isaac finally came out of the hypnosis and informed the gang that he found that the Alphas were keeping Erica and Boyd locked inside the vault of a bank named First National Bank, which had been abandoned for several years. When Isaac noticed the petrified looks of the others, Stiles asked him if he remembered the last thing that he said right before the bank, but Isaac answered that he did not know, forcing Stiles to claim that Isaac disclosed about the Alphas locking him in a room with a dead body inside. However, this still failed in jogging Isaac's memory and when he asked for the body's identity, Stiles sighed and revealed that Isaac had come across Erica's dead body.

A stubborn Derek insisted that Erica wasn't dead, but Stiles countered that the way Isaac made it sound did not leave them without much room for interpretation, igniting a debate over who was the other person locked with Boyd. Scott suggested it could be the mysterious girl, Braeden, that rescued Isaac from the Alphas in the previous episode but Isaac was sure that the girl with Boyd was a Werewolf, whereas Braeden was human. Stiles wondered aloud if the Alpha Pack had pitted Erica and Boyd against each other during the full moons and it was that how Erica got killed, referring to this as "Werewolf Thunderdome." This only made Derek more determined than ever to break into the bank and rescue his Betas from the Alphas' clutches, while Stiles digged into the Internet to get as much information as he could that could help them create a plan to rescue the two Betas.

The next night, Scott, Stiles, Derek and Peter gathered in the loft to formulate a plan to break into the vault using the information Stiles collected. Derek volunteered to punch through the vault's thick walls, an idea which Stiles scoffed at until Derek proved it by punching Stiles' hand. Peter objected to this plan of breaking Boyd and the other Werewolf out of the bank because he believed it to be a too risky move against the Alphas and went on to remind Derek, Scott, and Stiles of the dangerous threat the Alpha Pack represented, speaking of the twins Ethan and Aiden that possessed the power to merge into one giant Alpha. He seemed perfectly comfortable with letting Boyd and the other girl die, claiming that Erica was already dead but Derek was still in denial about that. Derek ignored his uncle's warnings and persisted with the plan, asking Scott to accompany him. Scott believed that they had to do their best to rescue their friends but one question still standed—if Erica was truly dead, who is the other girl in the vault with Boyd?

Meanwhile, Allison successfully broke into the bank but before she could make it to the vault, she was surprised and pinned to a wall by her guidance counselor, Marin Morrell, who warned the young Huntress that she had no idea of the trouble she got herself into and instructed her to hide in the nearby supply closet until she heard the fighting going on before walking away. Allison did not fully understand the meaning of Marin's message but ultimately did as she was told and hid in the supply closet before locking the door.

A few moments later, she heard footsteps from Deucalion, Kali and Ennis walking by the hallway. Kali briefly stopped in her tracks when she seemed to have caught the scent of an intruder and turned to look at the closet. In a smart move, Allison spilled a gallon of ammonia to mask her scent and this seemed to be enough convincing for the toe-clawed Alpha to shrug off her suspicions and walk away to join her fellow Alphas in completing their plan for Derek and Scott. Using her phone's flashlight, Allison looked around and saw numerous cleaning products until she discovered, to her horror, Erica's corpse seated in a chair against a shelf.

Just as they were about to infiltrate the bank, Derek noticed the anxious look on Scott's face and asked him to tell him why he was so nervous, with Scott's response being the subject that he learned during school that day—Risk and Reward. They were not certain of what the Alphas could have been planning during the summer and it had passed four months since they had painted their symbol in the Hale House's door; what if the detail—the Alphas' reasons to spare Boyd and wait until that night's full moon to kill him—was the most important thing they should worry about? Derek refused to bail on the plan and leave Boyd and Erica for dead, making his willingness to risk his life for theirs clear.

In *Fireflies*, Scott reluctantly revealed to Allison that Victoria had attempted to kill him back in Raving and Derek was forced to fight and bite her to save his life. Allison, visibly upset at this belated revelation but maintaining her composure, demanded to know why he didn't tell her the truth earlier and Scott hesitated for a few moments until he justified that he kept it a secret because he did not want Allison to remember her mother as a killer.

They turned around to see that Derek had returned and he was carrying Erica's lifeless body in his arms as he stared at it, looking distressed. The three of them took a brief moment to mourn the death of their friend and packmate and left the bank afterward to focus themselves in catching the feral Boyd and Cora before they accidentally hurt or killed someone under the full moon's influence after they spent the entire summer locked in the Hecatolite-lined vault.

In *Currents*, Kali, furious at Derek for his supposed role in the death of her lover Ennis, confronted him at his loft, which was turned into an electrical trap for the Alphas but was sabotaged due to Kali, Ethan and Aiden cutting off the power prior to their arrival. The twins showed Derek's girlfriend Jennifer Blake in their grasp and compelled Derek to fight Kali without any assistance from Boyd and Isaac by threatening to tear Jennifer apart if he refused to comply.

Kali and Derek fought at almost equal terms for quite a while until Stiles, Lydia and Cora arrived to finally turn the power back on, shocking and weakening Kali and Derek, as well as Boyd, who disobeyed Derek's orders and jumped into the fight to help his Alpha. As an Augmented Alpha, Kali managed to recover from the shock remarkably fast and demanded the twins to hold Derek's clawed hands upward while she lifted Boyd. She shoved the young Beta's body against his Alpha's claws, making Derek accidentally take Boyd's powers and kill him.

Kali warned Derek that she would give him until the next full moon to kill the rest of his pack and join Alpha Pack because if not, she would have no problem in returning and killing them all. Once the warning was given, she and the twins left the room, though Ethan seemed a little guilty for playing a part in Boyd's murder. Derek apologized to Boyd for putting his life in danger but Boyd guaranteed him that it wasn't his fault and even thanked him for making his life worth it by turning him into a Werewolf, even if it ended getting him killed. Dying, he confessed to Derek that he wondered what effects a lunar eclipse would have in Werewolves like them, and Derek began seeing one of Boyd's memories back when he and Erica were still in the Alpha Pack's custody.

In the flashback, Erica was asking Boyd about what would happen to them during the lunar eclipse and remarked that they lasted for hours because of the Earth's umbral shadow before wondering aloud if it would make them stronger. Kali walked past them and was heading straight to the door to exit from the vault after watching over the two Betas for an unknown amount of time, only stopping when Erica set her sights on her and declared that she hoped the lunar eclipse would make them stronger. She slowly stood up to her feet with her gold Werewolf eyes out and just as Kali turned around with her Alpha eyes out, Erica snarled and charged at the Alpha with all she had. Sadly, Erica was swiftly outmatched as she was seen laying on the floor trying to reach Boyd and whispered his name before she succumbed to the wounds she sustained in her clash with Kali and died.

Back in the present, Boyd's body collapsed on the water and he died as well, shattering Derek. Stiles, Lydia and Cora finally arrived and Cora broke down and started sobbing over Boyd's body while Stiles attempted to comfort the guilt-ridden Derek. All those present at the scene mourned Boyd's death.

In Alpha Pact, Isaac scolded Derek for his many mistakes: his ignorance over the fact that his girlfriend, Jennifer Blake, was the murderous Dark Druid killing innocent people to gain more power, the deaths of Boyd and Erica at the hands of the Alphas, etc. Although Isaac left the loft under the guise of helping the future McCall Pack in rescuing the kidnapped parents, Noah Stilinski and Melissa McCall, Peter strongly believed that Isaac was actually shifting his loyalty from Derek to Scott.

Guilt-ridden over the deaths of Erica and Boyd and how he harmed his packmates in his war against the Alphas, Derek ultimately went against Peter's advice of keeping his Alpha powers for his confrontation against Kali and sacrificed his Alpha spark to save Cora from dying from Jennifer's Mistletoe poisoning.
## Trivia

* Erica seemed to have romantic feelings for Derek when she kissed him during their training in *Abomination*, but Derek did not return the feelings because he wanted her to seduce Scott to break his relationship with Allison Argent.
* Derek was devastated with her death, and it is unknown what he did to her body after finding it at the bank's closet.

## Gallery

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