I Know What You Did Last Summer

I Know What You Did Last Summer is the first episode of the fifth season of The Vampire Diaries and the ninetieth episode of the series overall.
==Summary==
COLLEGE DAYS — After spending the summer enjoying her passionate relationship with Damon, and making sure that Jeremy is adjusting after his return from the dead, Elena is thrilled to move into the dorm at nearby Whitmore College with her new roommate, Caroline. Still believing that Bonnie has been traveling all summer and will soon join them, Elena and Caroline are surprised when a student named Megan shows up and announces that she will be sharing their dorm room. Katherine makes an unexpected appearance at the Salvatore house and pleads with Damon to help her now that she is human and vulnerable to her enemies. Matt and Rebekah return to Mystic Falls after spending a wild summer in Europe, where they met a mysterious beauty named Nadia. Elena can't shake the feeling that something is wrong with Stefan, and Silas makes a terrifying appearance at the "End of Summer" party in the town square.
==Plot==
It's the end of the summer and Elena and Caroline need to get ready for college. Though a bit hesitant, Damon says his goodbyes to Elena as she leaves for Whitmore College since none of them wants to leave each other after their newly started relationship. Jeremy stays behind under the guardianship of Damon who takes Jeremy back to school. No one knows yet that Bonnie is dead, except from Jeremy who sees her and talks to her and also answers everyone's mails and texts that are sent to her. As also no one knows that Silas is not gone, and Stefan is at the bottom of the lake.
At college, Elena and Caroline expect Bonnie to join them soon but they are shocked when an unknown girl named Megan joins their dorm instead of their friend. Caroline doesn't like the idea of having a stranger staying with them at all and when she discovers that Megan drinks water with vervain, she gets even more nervous because she believes that Megan knows about them and what they are. Elena calms her down and tells her they have to act normal, so they go to the party they were invited earlier.
Back at the Salvatore house, Katherine makes her unwelcoming appearance asking for Damon's help and protection since now that she is human, vulnerable, and scared. Damon offers to turn her back into a vampire to get rid of her, but she declines his offer since she doesn't know if that would work after she drank the cure.
Silas makes his appearance at the town square restaurant where he meets Sheriff Forbes drowning her sorrow in fast food. He tells her that he is not Stefan but Silas and when he realizes she can't help him, he compels her and leaves. Silas later meets Damon and Jeremy at the bar and Jeremy "feels" that he is not Stefan as when Silas touched Jeremy's arm, he felt something strange and tries to convince Damon about it.
At the college party, Megan is killed by a vampire, something that makes Elena and Caroline concern about their secret and that it may bust open. When the police tell them that Megan committed suicide they worry even more since the police is covering the murder. Elena and Caroline find a picture of Megan where she is with Elena's father.
Silas goes to the Salvatore house where he finds Katherine and tries to kill her. Katherine manages to escape from him and with the help of Damon and Jeremy leaves town. Damon convinced that the person who sees is not his brother but Silas, asks Silas to tell him where his brother is. Silas says he'll tell him only if he brings him Katherine back. Damon calls Jeremy to bring Katherine back but Katherine manages to cause an accident and she escapes.
Matt is having fun with Rebekah and meet new people. Among them is a girl named Nadia who later appears at Mystic Falls. At the end of the episode, Nadia and her partner cast a mysterious spell on Matt who loses his senses.
At the end of summer party at Mystic Falls, the Mayor and Bonnie's father, Rudy Hopkins is killed by Silas in front of everyone and influences them to help him find Katherine, while Bonnie watches on helplessly. Meanwhile, Stefan is still locked in the safe underwater and is hallucinating scenes where he talks to Damon and later to Elena, while he is fighting the urge to turn off his humanity.
==Cast==
===Main Cast===
*Nina Dobrev as Elena Gilbert/Katherine Pierce
*Paul Wesley as Stefan Salvatore/Silas
*Ian Somerhalder as Damon Salvatore
*Steven R. McQueen as Jeremy Gilbert
*Kat Graham as Bonnie Bennett
*Candice Accola as Caroline Forbes
*Zach Roerig as Matt Donovan
*Michael Trevino as Tyler Lockwood (voice only)
===Guest Cast===
*Claire Holt as Rebekah Mikaelson
*Marguerite MacIntyre as Liz Forbes
*Olga Fonda as Nadia
*Rick Worthy as Rudy Hopkins
*Hayley Kiyoko as Megan King
*Kendrick Sampson as Jesse
===Co-Starring===
*Sabrina Mayfield as Dianne Freeman
*Hans Obma as Gregor
*Max Calder as Student #2
*Jesse Haus as Student #1
*Jason MacDonald as Grayson Gilbert (photo)
==Trivia==
*Antagonists: Silas, Nadia, Enzo (unseen) and Gregor.
*Whitmore College is a few hours away from Mystic Falls.
*Rebekah and Matt were said to have sent the Mystic Falls Gang postcards from their European trip over the summer.
*Bonnie tells Jeremy that she doesn't want to ruin Elena's happiness (as well as the happiness of the rest of her loved ones) by revealing that she died.
*Silas reveals to Damon that Stefan is "suffering" just as he had for 2,000 years, alerting him to the fact that Stefan hadn't just left town after graduation as everyone had thought.
*Though Damon initially sent Jeremy to take Katherine out of town to keep her away from Silas, the revelation that Silas knew where Stefan was and what happened to him caused Damon to change his mind and instruct Jeremy to bring her back. Katherine, knowing she was being brought to her death, purposely caused Jeremy to wreck the car, injuring them both in the process before she left him for dead. Fortunately, Damon arrived just in time to feed Jeremy his blood and save his life.
*Damon offers Katherine his blood to turn her into a vampire again, but though she is sorely tempted, she declines his offer, explaining that since she is the only known person to have ingested the cure, there is no guarantee that she would actually awaken in transition, and she is too afraid that she could actually die for good.
*Elena and Caroline's new roommate, Megan King, is killed at the party that Elena and Caroline tried to attend. Though they realized upon looking at the state of her body that she had been attacked by a vampire, the head of the Campus Police ruled her death a suicide in an obvious cover-up.
*Upon looking through Megan's phone after her death, Elena finds a photograph of Megan with her adoptive father Grayson, indicating that the two knew each other.
==Body Count==
*Megan - Drained of blood; killed by an unseen vampire
*Rudy Hopkins - Throat slit; killed by Silas
==Continuity==
*Sheriff Forbes was last seen in The Walking Dead.
*Nadia was seen last seen in a flashback in Katerina.
*Grayson was last seen in a flashback in The Departed.
*Miranda was mentioned. She was last seen as a hallucination in We All Go a Little Mad Sometimes.
*Jenna was last seen in a flashback in The Departed.
==Locations==
*Mystic Falls, Virginia
**Salvatore Boarding House
**Forbes House
**Steven's Quarry (hallucination)
**Mystic Falls High School
**Town Square
**Mystic Grill
*McKinley, Virginia
**Whitmore College
***Elena, Caroline and Bonnie's Dorm Room
**Whitmore House
*Prague, The Czech Republic
==Behind the Scenes==
*This episode had about 2.59 million viewers in the USA.
*Hashtag during the airing is #TVDCollegeYears
==Cultural References==
* is the name of a 1997 horror movie starring Jennifer Love Hewitt, Sarah Michelle Gellar, Ryan Phillippe, and Freddie Prinze Jr. The screenplay was written by Kevin Williamson. The screenplay was also based on the 1973 novel by the same name by Lois Duncan.
*Supernatural (Season 4, Episode 9) also has an episode title with the same name.
*"" is the name of a 2015 song by Shawn Mendes and Camila Cabello. 
==Quotes==
:Stefan: (narrating) "...But our greatest threat is still out there, and he looks... just... like... me."
:Bonnie: (narrating) "If Katherine Pierce ingesting the only cure on this Earth and having to live as a human isn't justice, I don't know what is."
:Jeremy: (to Bonnie) "It's bad enough you're dead-- now you're a control freak?"
:Damon: (to Elena) "You're leaving! You're going to college. You're going to drink cheap beer, and you're going to protest about things you don't care about."
:Elena: (to Caroline) "To us. And college, and being functional vampires."
:Jeremy: (to Bonnie) "I should get going. The freak who faked his own death can't also be late for math."
:Rebekah: (to Matt) "Five-star restaurants in Paris to tapping kegs in a park? Tragic."
:Rebekah: (to Matt) "Tell him we had a threesome! He'll understand."
:Caroline: (to Elena about Megan) "She has an entire drawer dedicated to organic linen."
----
:(Katherine is drinking Damon's alcohol)
:Katherine: "You're gonna have to cut me off soon. My tolerance is a joke now. It's just so... glorious."
:Damon: (amused) "You're miserable."
:Katherine: "Please. I'm Katherine Pierce. I'm a survivor."
:Damon: You're a liar. Your hair is messed up, your nails are chipped. You're a sad, miserable human being and you want me to turn you. So, here. (Damon bites his wrist and offers it to Katherine) Go ahead. Drink up. I'll kill you, you'll bite the mailman, and you'll be a vampire again. Go ahead. Come on."
:Katherine: (looks tempted, but ultimately resists the blood) "I can't, okay? No one's ever taken the Cure before. If I die, there's a good chance I may never wake up."
:Damon: (rolls his eyes) "And that would be tragic."
:Katherine: "And deep down in that mushy, gushy Elena-loving heart, there's a part of you that doesn't want me to die."
----
:Damon: "If I have to hear the word "doppelgänger" one more time, I think I'm gonna actually have to learn how to spell it."
:Silas: "You say you don't believe me, and yet your mind is spinning at the possibility."
:Damon: "A) Get out of my head. B) I think I'd know if my little brother had an evil twin."
:Silas: "Oh, we're not twins. See, when I became truly immortal, nature retaliated by creating a version of me that was killable. It's called a shadow self."
:Damon: "Well, whatever you are, your plan didn't work. The cure's gone. Now what do you want with Katherine?"
:Silas: "I could tell you, but wouldn't be so much more fun if it were a surprise?"
:Damon: "You're not getting her."
:Silas: "Damon, how well do you know your brother? Do you really think he would leave town for three months without so much as a phone call so you could live happily ever after with the love of his life? Or did you just delude yourself into thinking it would be that easy?"
:Damon: "Where's Stefan?"
:Silas: "He's suffering, like I suffered. So, call the hunter, bring me Katherine, and then I will tell you where your little brother is."
----
:Damon: "One day. One day where you don't screw it up."
:Jeremy: "Leave me alone, Damon."
:Damon: "You're lucky you didn't put one of those idiots in ICU."
:Jeremy: "Says the guy that once killed me."
:Damon: "Yes! In the privacy of your own home, away from prying eyes! Unlike you, who went all hunter in the middle of the hallway. You got expelled, genius."
:Jeremy: "Does that mean I don't have to go back to school?"
:Damon: "I compelled Principal Weber into a very generous three-day suspension. Elena does not need to know about this."
==Multimedia==
===Soundtrack===
===Videos===
The Vampire Diaries Season 5 - "Game Changer" Promo HD
The CW - Fall Preview Sizzle HD
The Vampire Diaries 5x01 Webclip - I Know What You Did Last Summer
The Vampire Diaries - 5x01 - I Know What You Did Last Summer - Sneak Peek 2
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==References==
==See also==
Category:The Vampire Diaries Episode Guide
Category:The Vampire Diaries Season Five
Category:Season Premieres