Jack and Katie's (recurring guest star KATE MARA) relationship progresses, while Courtney's comes to a screeching halt after Jack discovers Nate (recurring guest star MIKE ERWIN) is cheating on her with another girl. When Bobby is required to do a family history project for class, he goes through his mother's closet for clues and discovers a letter that reveals the real reason his father left. Meanwhile, Grace is shocked to learn that her affair with Tom (recurring guest star BRADLEY COOPER) has cost her more then she had bargained for. NEIL PATRICK HARRIS (Doogie Howser, M.D.) guest stars as Preston Phelps, a graduate student in the year 2045.
Download the TV Guide app for iPhone, iPad and Android!