Dexter Season 4

Dexter is now a family man, and Rita has given birth to a baby boy named Harrison. The family has moved to the suburbs, where Dexter struggles to reconcile his new life with his killing urges. Special Agent Frank Lundy returns to hunt down the “Trinity Killer” (John Lithgow) who he believes always murders three people in a very specific sequence: a young woman in a bathtub, an older mother of two falling to her death, and a father of two bludgeoned to death.