Season 13

On the hunt for Bjorn, Mei-Lin and Detective Barrett Kline find out that he is not the only killer on the loose. The residents of Castle Lupa all try to move on from the massacre at Club Calico, some of them having more difficulty with it than others.

## Plot

When fellow law enforcer, Justine Arriva, is murdered in her own house, Detective Barrett Kline suspects Bjorn Bjergsen might be behind it. He investigates the case with Mei-Lin, only to find out they might be dealing with a totally different killer, with a different motive. But the only other direct suspect of the case, Justine's ex-husband Marty Keaton, has zero evidence against him.

After the sudden departure of Rina, new residents at Castle Lupa have settled in: Kalina Gutnik, Keisha Jacobs, Tobias Allison, Devan Parekh and Josué Galvez. But the veteran residents of the castle quickly grow annoyed of the snobby Tobias.

Another murder takes place, this time on the docks of Brindleton Bay. Mei-Lin and Barrett meet up with the town's mayor and his wife, Justin and Supriya Delgato, who worry that the killings might negatively impact tourism in the town.

At home, Mei-Lin finds a secret passageway in her bedroom's bookshelf, and finds a way to climb up the castle's restricted tower. At the top stage of the tower, she finds what seems to be some magician's room. Upon approaching an orb, it starts glowing red, and Mei-Lin receives a vision of the aftermath of Matteo Landgraab's murder, only this time in the Tesoro throne room, with Heather Landgraab, Mans Latierez and Olivia Thierres present. The latter two ensure her that she will turn out just like them. There, the vision stops, and Mei-Lin shockingly leaves the tower.

Sierra and Katy start properly dating, while Derek joins Sunny in her quest to rescue injured stray animals around town, in hopes of make himself as productive as his boyfriend Jin who is becoming a musician. They stumble across Betty, who Sunny quickly grows fond of and adopts. Arban finds himself having extreme difficulty getting over Kierra's death, but though Luano suggests that seeking help might be a good idea, he doesn't think it's necessary.

Mei-Lin and Barrett are summoned to Windenburg, where another killing has taken place near The Schrieking Llama. They question all the nearby neighbors, including the Tesoro and Alto families. Though no one has an idea about who the killer might be, they do get told that the Windenburg re-elections will be held the following day. After the death of Mayor Clara Bjergsen, new elections were held in town, initially won by Vita Alto. But many people, including the Tesoro family, believed the election to be rigged and demanded a re-election. Diana Tesoro tells Mei-Lin she knows about the killer's whereabouts, and promises to tell her on just one condition: She has to speak up at the re-election, and tell the people of Windenburg that the Alto's were conspiring with Heather Landgraab. To support the claim, Diana will show security camera footage of Holly Alto entering Skydeath Lair after the massacre of the Fyres family.

At first Mei-Lin is hesistant, believing none of the people of Windenburg will believe her since most of them see her as the mother of an infamous killer. But Diana assures her she has a bigger chance of convincing them, since she is the last person alive who truly knew Heather during that time. Mei-Lin agrees to do it and speaks out at the re-elections, causing a huge uproar and many to turn against the Alto's.

In Brindleton Bay, the Castle Lupa residents attend a party at the Salty Paws Saloon, which many residents of the town and further away join. While Joseph meets up with his drinking-buddy Jeff Myers, Keisha hooks up with Jared Frio in the bar's toilets, and Sierra defends Thomas when Tobias bullies him. Sunny witnesses Katy making out with another girl. Before she is able to intervene, she bumps into her brother, Cameron, who asks her if he can stay at Castle Lupa for a few days as he is visiting the town. First reluctant to be surrounded by a family member, she agrees to let him stay. After most guests have left the party, Tobias is suddenly killed in the back alley of the bar by the Shadow.

Mei-Lin and Barrett are joined by Miriam Block, who expresses her worries about Mei-Lin's statement at the re-elections. Barrett agrees, believing Diana's tip wasn't worth causing a public political uproar. Diana tells Mei-Lin that a mysterious figure has been spotted on several nights on the grounds of the Von Haunt Estate. That night, the trio and Wanda, search around the estate ground in search for the killer. Barrett is attacked by an armored knight in the estate's hedge maze, but is saved by Miriam, who miraciously overpowers the knight. They unmask him, the knight revealing himself to be Laurent Collins, a resident of Windenburg. That same night in Oasis Springs, Aiden Schafer is shot to death by a mysterious figure dressed as a cowboy.

Laurent is arrested and questioned at the police office, but he refuses to talk during questioning. Barrett is summoned by his chief, who tells him he shouldn't involve Mei-Lin in his investigations anymore, something which he doesn't take well.

During a hangout in the dog park, Derek and Sierra are attacked by Bjorn, dressed as the Shadow. Derek gets stabbed in the gut, but Sunny intervenes and shoots Bjorn in the shoulder, preventing him to finish the job and causing him to flee. While Sierra just has some bruises, Derek is taken to the hospital.

The news of Aiden's death reaches Barrett, Mei-Lin and Miriam, and they travel to Oasis Springs to investigate. There, they find out that, just like in Windenburg, two family houses are opposed to each other: The Caliente and Schafer families. In the Caliente's newly built mansion, Starsun, the trio hears from Dina Caliente and her father, Mayor Flamenco Caliente, that the Schafer family believes they commited the murder on Aiden, since he was opposing many of Flamenco's ideas for the town and was planning to run for Mayor in the next election. Because of the murder, the two families are now at even worse odds with each other. But upon visiting Aiden's wife and daughter, they assure that they don't have any suspicions about the murder.

Sunny decides not to tell Sierra about what she saw Katy do at the bar party, believing she will come over as jealous and wanting to ruin their relationship, but is unsure if it's the right thing to do. She finds more strays at Rottweiler beach, including Sarah the labrador, and Axel the cat. But as she takes them in, she realizes taking care of so many animals is a bigger investment of her time than she thought, and her job performance is starting to decay.

Mei-Lin returns to Brindleton Bay, and visits Mayor Justin Delgato, only to find Derek and businessman Victor Feng there as well. She is unable to overhear their conversation before they leave and reports the investigation of the murders to the Mayor.

Back home, she is pleased to find Miriam with her sons, and Jacob's parents, Deandre and Sandy Malloy, and his sister there. But the pleasant gathering is interrupted when Bjorn breaks into the castle and murders Derek at first sight. He comes eye to eye with Mei-Lin and the rest of the household in the great hall, and charges at Joseph upon seeing him. He strikes him with an axe, but Josué jumps before Joseph to save him and gets his head bashed in by the axe.

Bjorn chases Joseph to the castle's first level, but loses sight of him. He stumbles across Sunny and Sierra, and attempts to attack them, but is attacked himself by Katy. He stabs her to death before she is able to overpower him. He climbs to the second level, where he is faced by Arban and Thomas. Thomas flees the scene and Arban fights Bjorn, wanting to take revenge for the murder of Kierra, but is unable to overpower him and gets knocked out.

Bjorn searches the second floor to find Thomas, but is confronted in the hallway by another person dressed as the Shadow: Joseph. Bjorn confronts the man dressed in his clothes about the massacre at Club Calico, revealing that it wasn't Bjorn, but Joseph who commited the killings at the club, out of blind rage after Bjorn killed his sister. The two Shadows fight, Thomas witnessing it, and Joseph is able to beat Bjorn, who flees the scene. Joseph turns to his son, revealing himself, but they're interrupted by Sandy, who gasps in shock at the discovery that Joseph is the Shadow as well. To protect himself and his son, Joseph stabs Sandy to death before Thomas' eyes.

The entire household is in mourning again. Sierra and Jacob find solace in each other and, after a night of drinking, share the bed in a highly intimate moment between the two.

Mei-Lin travels to the Crumbling Isle in Windenburg, where she faces Bjorn. The two have a brief standoff, where Bjorn points a gun at her, but is unable to shoot. The two share a conversation about how their past mistakes seem to keep following them and cause new ones. After realizing that things will never change if he continues on this dark path, Bjorn takes off his cloak, lets it get taken away by the wind, and bids farewell to Mei-Lin before walking off.

On a walk on Deadgrass Isle, Sunny meets Victor Feng, who asks about her many dogs. When she tells him about her animal rescue initiatives, he offers a place in Newcrest to her to set up an animal rescue facility. She gleefully accepts the offer.

Sobered up, Jacob and Sierra discuss the previous night, admitting to each other that they'd only like to remain friends and that their intimiate moment was due to the alcohol, their emotional breakdowns, and the already close bond they share. But when Sierra reveals that she is pregnant, Jacob reacts in shock and panic, but quickly calms down and leaves the choice of keeping the baby to Sierra.

After visiting Derek in the hospital with his mother, Jin is approached by Riya Turan, and is offered a music gig at an upcoming big event, which he excitingly accepts.

After visiting Miriam and discussing her conversation with Bjorn, Mei-Lin stumbles into Barrett, who explains to her that his chief won't allow them to work together again, but they decide to meet up with each other soon again. Mei-Lin is approached by Manuel Keaton on her way home, who tells her that he suspects his father Marty killed his mother. She promises him he will tell Barrett to seek contact with him and returns home.

Her housemates question her about her confrontation with Bjorn, but when she admits that she didn't kill him, they become angry with her. Sierra lashes out to her, accusing her of being the cause of all their troubles ever since the murders at Granite Falls, and saying that they would have been better off if Mei-Lin had just left them alone.

Believing she might have a point, Mei-Lin considers leaving the household. She has a talk with Jacob on the beach. He tells her he doesn't believe she is the reason for all their troubles, but thinks that it might be for the better for both parties if Mei-Lin would leave. Mei-Lin promises to finance the house for them so they can stay in a safe place, and Jacob promises her he will take care of everyone. The following morning, after saying goodbye to Thomas, Mei-Lin leaves Castle Lupa with Wanda, and walks off into the unknown.

A few days later, Joseph breaks into Joey Priest's house, murders him, and finds Sasha's family necklace in one of the closets and takes it with him.