Continuity mistake: When Dexter and the Lieutenant are talking after finding the head, she says "So Dexter, tell me. How'd you get so smart?" When she does, a lock of hair keeps appearing and disappearing from by her eye.(00:44:30)
Visible crew/equipment: When Dexter is driving Joe to the graves at the start, just as they turn to the graves a crew light is reflected in the black paintwork of the car. There are no lights in the background for it to be anything else.(00:02:50)