In the season finale, 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 (recurring guest star Claybourne Elder) is cheating on her, but gets the surprise of her life. Mouse and West (recurring guest star RJ Brown) find themselves in a sticky situation. Elsewhere, Samantha considers leaving the city, and Larissa's wedding to Harlan (recurring guest star Scott Cohen) is out of this world.