calls Katherine despite Stefan's warning not to. Katherine is surprised and when Damon reveals to her that Mason is dead and they have the moonstone, she reassures him that she has a Plan B. Alaric and Jenna (Sara Canning) are having dinner when Elena get home. Katherine calls and asks for Elena telling her that she knows about her fake fights with Stefan because she had warned Jenna off of vervain and could control her and Jenna has been informing her about everything. In the background, Jenna stabs herself while under Katherine's compulsion and collapses. Alaric and Elena take her to the hospital and the doctor informs them that she will be fine. Elena, after what happened with Jenna, goes to Stefan to tell him that they were fools to ignore Katherine's orders and to fool her. They cannot be together because they put the ones they love in danger and she breaks up with him. The episode ends with Katherine compelling Matt (Zach Roerig) to attack Tyler and won't step back until Tyler kills him because as she says she needs a werewolf and since Mason is gone, she needs a new one. Feature music In "Plan B" we can hear the songs: "This = Love" by The Script "Tighten Up" by The Black Keys "Science of Fear" by The Temper Trap "Wires" by Athlete Reception Ratings In its original American broadcast, "Plan B" was watched by 3.62 million; up by 0.15 from the previous episode. Reviews "Plan B" received positive reviews. Matt Richenthal of TV Fanatic rated the episode with 4.8/5 saying that the episode was dark, shocking and exciting. "Did anyone actually expect Damon to kill Mason?!? Shades of this vampire's humanity appeared to be coming out after he realized Mason was just like him (only less dashing and intelligent), seduced by Katherine's charms and being manipulated. But that's what makes Damon such an intriguing character." Diana Steenbergen from IGN rated the episode with 8.5/10 praising Candice Accola's acting: "Every episode I find myself having more good things to say about Candice Accola's portrayal of Caroline. While this week has the very sad (and real) breakup of Stefan and Elena, it is Caroline's time spent with her mother that is the most heartbreaking. [...] The journey Accola is taking Caroline through this season continues to be one of the more compelling storylines on the show." Josie Kafka