Mason Lockwood tried to kill you
[Katherine's bedroom]
(Katherine and Mason are still in Katherine's bed)
Katherine: Where is the moonstone? Liz: Yes. Katherine's gonna do everything that she can to drive me and Stefan apart and Caroline just got trapped in the middle
Bonnie: It's not that you and Stefan are pretending to fight, is that I didn't even know you guys were fighting at all
Elena: I'm sorry, I don't want to keep things from you but you've made it pretty clear where you stand with the whole vampire thing
Bonnie: So that makes me the unman out
Elena: No, Bonnie, of course not
Bonnie: I know where I stand, Elena and I know where you stand but where do we stand? Like a vision? Werewolf thing aside, the guy is a surfer. She's got to be using him, it has to be
Stefan: Using him for what? Tyler: No. Bonnie: That's me giving you an aneurysm. Good, good
Bonnie: Damon, I'm not gonna help you hurt him
Damon: Mason Lockwood's a werewolf, Katherine's evil. (Caroline is pulling Stefan from the well. Another snake is on her. (Caroline brings Elena up. Hey, did you know that he hide the moonstone at the bottom of a well full of vervein? (Jenna stabs herself. Matt: Until he kills me
Plan: A: Liz; Q: Who accepts Caroline? A: Caroline; Q: Who compels Liz to forget that she is a vampire? A: her mother; Q: Who does Caroline convince to forget that she is a vampire? A: Bonnie; Q: Who gives Mason an aneurysm? A: Mason; Q: Who does Katherine believe she loves? A: Damon; Q: Who tortures Mason? A: the moonstone's location; Q: What does Bonnie see in a well? A: vervain; Q: What is in the well that burns Stefan? A: Elena; Q: Who breaks up with Stefan for good? A: Jenna; Q: Who did Katherine force to stab herself? A: Matt; Q: Who did Katherine force to attack Tyler? A: a werewolf; Q: What does Tyler become after killing Matt? Summary: 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.