Ghosts of Beirut
Waco: The Aftermath
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George & Tammy
Dexter: New Blood
Original Air Date: Sep 27, 2009
S4:E1 Preview Scene (1:30)
S4:E1 Preview Scene (1:56)
"You think serial killers are bad?"
Dexter learns more about his dark origins from Dr. Evelyn Vogel, an old family friend, and is reunited with Hannah; Deb suffers the consequences of loving her brother despite everything; Masuka learns he has a daughter.
Dexter comes clean to Deb and finds true love with a fellow serial killer; Deb learns the hard way how difficult it is to keep Dexter's secret; LaGuerta gets closer to pinning the Bay Harbor Butcher killings on Dexter.
Dexter stalks the Doomsday Killer, a vicious, deluded, religious fanatic who displays his victims in grisly, Biblical-themed tableaux; Deb reconsiders her relationship with Dexter; Quinn jeopardizes his partnership with Batista.
Dexter grieves his loss and tries to stay one step ahead of a suspicious Quinn and his own sister, while reluctantly guiding a near-victim (Julia Stiles) of a serial killer who sets out to get lethal revenge.
Dexter has become a husband and father, and finds a potential mentor in a macabre serial killer known as Trinity (Emmy winning guest star John Lithgow) who lives a familiar double life as a suburban family man.
Dexter befriends an assistant District Attorney (Jimmy Smits) who becomes increasingly and disturbingly helpful in Dexter's secret pastime; Debra gets a new partner, Joey Quinn (Desmond Harrington).
Dexter tries to sabotage his department's investigation into his killings and hooks up with an obsessed pyromaniac; traumatized Debra dates the FBI agent assigned to the case; Rita urges Dexter to join a treatment program for addicts.
Dexter hunts the Ice Truck Killer, whose gruesome crimes indicate knowledge of Dexter's true identity, triggering hidden memories; Dexter's sister Debra joins Homicide; Rita's ex-boyfriend is paroled.