TVD Season 2

Season 2 ( 1-10)

1- " The Return "

Picking up where the first season left off, Elena arrives home to discover the fates of Uncle John and Jeremy. Jeremy has not transitioned into a vampire, because he did not take enough drugs to die and Anna's blood overcame the overdose. Damon, Bonnie, and Elena agree that Caroline needs Damon's blood to survive. Damon realizes that Katherine has returned and is impersonating Elena.

Tyler is surprised when his uncle, Mason Lockwood, arrives in town to console him. Katherine and Damon nearly sleep together, but Katherine tells Damon, "it will always be Stefan". Distraught, Damon goes to see Elena, who resists his attempt to kiss her. Angry that Elena also loves Stefan, Damon snaps Jeremy's neck. Jeremy survives because he is wearing a Gilbert ring, which protects the wearer from death from supernatural causes.

Katherine goes to the hospital and smothers Caroline with a pillow. Before Caroline dies, Katherine gives her a message for the Salvatore brothers: "Game on."

2- " Brave New World "

Caroline has become a vampire and awakens in the hospital craving blood. Tyler catches Mason searching for a moonstone, which is a family heirloom. At the carnival, Damon compels a boy named Carter to pick a fight with Tyler to provoke one of Tyler's bursts of anger. Mason breaks up the fight using his supernatural abilities, proving that he is a werewolf. 

Caroline confronts Damon about his abusive treatment, and he realizes that she is a vampire. He alerts Elena and Stefan, while a ravenous Caroline drains Carter. Stefan promises Caroline he will guide her journey as a vampire. Tyler retrieves the moonstone Mason has been seeking. Matt notices Caroline's erratic behavior but admits that he loves her.

3- " Bad Moon Rising "

Elena, Damon, and Alaric head to Isobel's old office at Duke University, where it is revealed that vampires and werewolves used to roam freely until a shaman uttered a curse to limit their powers, after which the werewolves were servants of the moon and vampires became the slaves of the sun. 

Stefan teaches Caroline how to control herself and hunt animals. Bonnie makes Caroline a daylight ring so that she will not be burned by the sun. In werewolf form, Mason encounters Stefan and Caroline. Tyler saves them by shouting at the werewolf; he later finds Mason in the woods and realises what has happened. 

Unable to control herself, Caroline feeds on Matt. She compels him to forget it, but ends their relationship to keep him safe from her. Damon tells Elena Katherine's real name, Katerina Petrova, to aid Elena with her research. Alaric reaffirms his romantic interest in Jenna, and Caroline finds Katherine in her bedroom.

4- " Memory Lane "

Katherine tells Stefan that she will kill Elena unless he ends his relationship with her, and as a result, Elena realizes that Caroline is working for Katherine. Elena and Katherine finally meet, but Katherine ignores Elena's questions. 

Damon stabs Mason with a silver knife, but Mason says it is only a myth that silver hurts werewolves. They are now enemies. Katherine remembers how in 1864, after Stefan and Damon were shot in an attempt to save her, she had kissed Stefan, declaring her love and saying they would be together again one day. Stefan and Elena stage a fake break-up to prevent Katherine from hurting anybody.

5- "Kill or Be Killed "

At the Mystic Falls picnic, Mason Lockwood tells Sheriff Liz Forbes that Stefan and Damon are vampires. Liz and her fellow police officers shoot Stefan and Damon. Caroline and Elena reach the Salvatore's before Liz can kill them, but Caroline's identity as a vampire is exposed to her mother. Liz rejects Caroline as her daughter, and Stefan drinks Elena's blood to gain strength. 

Caroline confesses to Elena that Katherine had threatened to kill Matt if Caroline didn't spy on Elena and Stefan for her; Elena forgives Caroline. Jeremy and Tyler start to bond when Tyler learns that Jeremy knows about the curse. 

Tyler almost kills a girl, feeling for a second that he wants her to die. He then tells Mason that he wants nothing to do with the curse, and gives him the moonstone. It is revealed that Mason is working for Katherine, who wants the moonstone, and that they are lovers.

6- " Plan B "

Liz accepts Caroline, and Caroline compels her mother to forget that she is a vampire. Bonnie incapacitates Mason by giving him an aneurysm. Damon then questions and tortures Mason who, believing that Katherine loves him, refuses to talk. Telling Mason that Katherine is using him, 

Damon eventually kills him. Bonnie has a vision of the moonstone's location in a well. Stefan discovers that the well is full of vervain, which burns him. Caroline and Bonnie help Elena rescue Stefan and retrieve the moonstone. 

Katherine compels Jenna to stab herself. Fearful of what else Katherine might do, Elena breaks up with Stefan for good. Needing another werewolf, Katherine compels Matt to attack Tyler, so that Tyler will kill Matt and become a werewolf.

7- " Masquerade "

Stefan, Damon, Bonnie, Jeremy, Alaric, and Caroline plan to kill Katherine at the Lockwoods' masquerade ball. Katherine is visited by Lucy, a witch who is to help her retrieve the moonstone. Under Katherine's compulsion, Matt fights Tyler. 

Caroline breaks up the fight, but Sarah, who is also compelled, stabs Tyler, and he accidentally breaks her neck. Tyler's eyes turn yellow, showing that the curse has been triggered. Stefan and Damon try to kill Katherine, but they stop when Jeremy tells them that every time they stake her, Elena is wounded. Katherine reveals that she had Lucy put a spell on Elena and herself, which linked them. 

Lucy, who is Bonnie's cousin, lifts the spell and incapacitates Katherine, who collapses. Damon traps Katherine in the underground tomb. As Elena heads home she is intercepted by a masked stranger.

8- " Rose "

 A vampire named Trevor takes Elena to an abandoned house, where she meets Rose, another vampire. When Tyler witnesses Caroline's abilities, she reveals that she is a vampire. Elena overhears Rose and Trevor arguing about a vampire named Elijah. Using a spell, Bonnie locates Elena. 

Elena tries to extract information from Rose, who tells her that Elijah is one of the "original" vampires. Rose and Trevor are using Elena, the Petrova doppelgänger who is the key to breaking the curse, as a bargaining chip. 

Elijah arrives, and Rose offers him Elena in exchange for their pardon. Elijah agrees but kills Trevor. Elena tries to stall Elijah by saying that she knows where the moonstone is, but he compels her to tell him its location. 

Stefan and Damon arrive to fight with Elijah and stake him. Elena's vervain necklace remains at the house. Later that night, Damon is in Elena's bedroom with her vervain necklace in his hand. He tells her that he loves her but doesn't deserve her, and that Stefan does. Then he compels her to forget what he said. In the abandoned house, Elijah pulls the wooden stake out of his chest.

9- " Katerina "

The episode begins in Bulgaria in 1490 and shows Katherine giving birth to a baby girl. Her father says that she has shamed their family and takes the baby away. In the present, Elena goes to the tomb, where she offers Katherine blood in exchange for the truth - that a doppelgänger from the Petrova line can be used to break the curse. 

As Katherine's descendant, Elena is the current Petrova doppelgänger. Katherine reveals that she was expelled from Bulgaria and fled to England, where Elijah and Trevor found her. They recognized her as the Petrova doppelgänger and Elijah tried to kill her, but Trevor helped her to escape. She became a vampire so that she could not be used to break the curse. Katherine came to Mystic Falls to offer Klaus what he needed to lift the curse: the current doppelgänger, a witch, a werewolf, a vampire, and the moonstone. She hoped that Klaus would spare her life in exchange for this. 

Bonnie meets a warlock named Luka and his father. Jeremy is jealous of Bonnie's attraction to Luka. Damon and Rose seek information about Klaus from Rose's vampire friend, Slater, but a healed Elijah overhears them. Damon and Rose sleep together, and Elijah compels Slater to stake himself. It is revealed that Luka and his father are working for Elijah.

10- " The Sacrifice "

Elena and Rose go to ask Slater about Klaus, but they find his staked corpse. Elena uses information from Slater's computer to get Klaus's attention, saying she wants to surrender. Caroline and Tyler discover Mason's journal and the video diary that he used to document his transformations. 

Bonnie plans to lift the spell from the tomb and incapacitate Katherine so that Stefan can grab the moonstone, but Jeremy goes ahead with the plan alone and is captured by Katherine, who feeds on him. Stefan saves Jeremy but is trapped himself. Three vampires confront Damon, Rose, and Elena. 

Elijah kills the three vampires and then departs. Back home, a trapped Stefan makes Damon promise to protect Elena. Elijah informs Luka's father that Damon and Stefan will protect Elena, which is Elijah's goal.