Christian's ex-lover Gina (guest star Jessalyn Gilsig) reveals that she his pregnant, and that he has a week to decide whether he wants to be a part of his unborn child's life. Julia questions Matt's paternity. Matt discovers that Henry (guest star Andrew Leeds) is romantically interested in Cara (guest star Keri Lynn Pratt), the girl they ran over. Sean and Liz (guest star Roma Maffia) discover that McNamara/Troy's latest patient suffers from split-personality disorder, and that each personality is requesting different plastic surgeries.