(Jesse explains why she's tracking Cameron)
Jesse: She's taken over. It's sick is what it is. Imagine if he spends the next 20 years with her? Imagine what he'll become… what she'll turn him into? Just try. I'm here to stop her. I'm here to save him.
(Derek uncocks his gun)
Derek: I've got to think about this.
Jesse: What the hell are you doing here? Why'd Conner send you back?
(Derek holds up a photograph Jesse took of him and John)
Derek: I love you… but don't push it.