Original Air Date—10 December 2006
Dexter investigates when the Ice Truck Killer strikes again, killing the prosthetic arm prostitute and leaving her body before a Christmas tree in Miami's Santa's Cottage. Sgt. Doakes continues to grow more suspicious about Dexter after catching him in a series of lies about his connection to the Ice Truck Killer. Dexter finally finds a connection between him and the Ice Truck Killer over a past case involving Harry Morgan and a bloodbath crime scene back in 1973 involving Dexter's biological mother. Meanwhile, Lt. Maria Laguerta braces herself for dramatic changes in the department when the officious Captain Matthews maliciously makes her the scapegoat for the department's failure in the case to find the Ice Truck Killer, and he has her replaced. Rudy and Debra spend some quality time together in which he proposes marriage to the smitten detective. With Angel in the hospital recovering from the stabbing, his estranged wife pays a visit, while Rita decides to take her children, Astor and Cody, to visit Paul who's now back in prison.
