Things grow increasingly tense between Carrie and Tom. When Larissa drops an unexpected bomb on Carrie, Sebastian decides he, too, needs to come clean about something. Maggie turns to Walt when she thinks Pete is cheating on her, but gets the surprise of her life. Mouse and West find themselves in a sticky situation. Elsewhere, Samantha considers leaving the city, and Larissa's wedding to Harlan is out of this world. (thetvdb.com)