04E12 - The Getaway

**SPOILER ALERT!!** As the noose tightens, Arthur warns Dexter to back off. But Dexter will do anything to stop Arthur from eluding him, even if that means putting himself on the wrong side of the law. Rita acknowledges the rocky relationship she and Dexter share, but reaffirms her support. Meanwhile, Batista and LaGuerta face the consequences of their actions and now that they are married agree to move in together. Debra finally learns that Dexter is the Ice-Truck Killer's brother and tells Dexter. She then tells him he is the only constant truly good thing in her life and that she loves him. At the culmination of the episode, Dexter finally captures and kills Arthur, but then goes home to find Rita dead - apparently killed by Arthur hours earlier in the same manner as the other Trinity bathtub victims. Dexter finds Harrison at the scene of the crime. He was spared, but forced to witness Rita's murder, and is left sitting in a pool of her blood - exactly as Dexter had once been. Dexter flasheÏs back to Harry carrying him out of the shipping container where his mother was murdered as he carries his blood-soaked son out of the house.