Summer decides to take an active role in creating the comic book, but Seth doesn't know if he can handle spending that much time alone with her. Sandy & Rebecca (recurring guest star KIM DELANEY) reminisce about days gone by as Kirsten tries to convince Caleb that he could have a familial relationship with Lindsay (recurring guest star SHANNON LUCIO). Meanwhile, Caleb decides what kind of future he wants to have with his daughters. & Alex (recurring guest star OLIVIA WILDE) asks Marissa where their friendship is going. Chicago singer/songwriter RACHEL YAMAGATA performs.