Sunday Poll: Which is your favorite 4th episode of a season? Vote below!
Season 1 Episode 4: The Ice Truck Killer begins leaving pictures from Dexter's childhood at the crime scenes. Is the killer trying to tell Dexter something about his own past?
Season 2 Episode 4: Rita's estranged mother visits and senses something is wrong with Dexter. Masuka thinks he's developed a lead in the Bay Harbor Butcher case, which has Dexter concerned. Angel's interrogation of a witness crosses a line.
Season 3 Episode 4: After a failed marriage proposal, Dexter attempts to convince Rita that he wants more than a financial merger and fatherhood. He wants a family with Rita. Deb lands a new case. Miguel's brother, Ramon, is dead set on finding Oscar's murderer, which worries Dexter and Miguel.
Season 4 Episode 4: Dexter is left home alone and with free time as Rita takes the kids on a vacation which may prove interesting for Dexter in several ways. In the meantime two other relationships are on the line: LaGuerta and Batista debate about their future and Debra's own, as she helps Lundy with the Trinity Killer investigation.
Season 5 Episode 4: Dexter catches a mysterious woman who may have witnessed him in the act of killing a killer; Deb has a frightening run-in with a murder suspect in the Santa Muerte homicides; and Quinn uncovers more striking similarities between Kyle Butler and Dexter Morgan.