Dexter (episode)
Dexter is contacted by his foster sister Debra (Jennifer Carpenter), a vice officer in the Miami Metro Police Department. Dexter, a blood spatter analyst for the department, assists Debra in investigating an apparent serial killer targeting prostitutes. Dexter examines the latest victim and is shocked to find no trace of blood on the dismembered corpse. At the police station, Dexter discusses another murder case being handled by James Doakes (Erik King), a detective who dislikes him. Later, Dexter watches Jamie Jaworski, a murderer who escaped justice due to a faulty warrant, and breaks into his home to find evidence. Once he confirms that Jaworski is guilty, Dexter meets with his girlfriend Rita Bennett (Julie Benz), a former victim of domestic abuse victim; Rita has two young children, Astor and Cody. While on a date with Rita, Dexter finds another murder scene with no traces of blood, this time with the victim's head missing. Dexter theorizes that the killer murders his victims in extreme cold, explaining the absence of blood, and might be using a stolen refrigerated truck. Dexter allows Debra to pitch the theory, but their superior officer, Lt. María LaGuerta (Lauren Vélez), dismisses it.
Dexter (season 6)
The season's subplots include Angel's sister dating Louis Greene. Greene wants to impress the police force, especially Dexter, and is revealed to have acquired the prosthetic hand from the Ice Truck Killer case, which he mails to Dexter. Debra refuses to yield to pressure to close the case of the overdose death of a prostitute, eventually discovering that Deputy Chief Matthews was present when the woman died. Matthews is forced to retire after LaGuerta leaks the information. Finally, Debra attends department-ordered therapy sessions after being involved in a shoot-out. During her sessions, she begins to realize that she may have romantic feelings for Dexter. She goes to the church (she knew Dexter was doing forensics there) but winds up walking in on him just as he plunges a knife into Travis' chest, to which Dexter responds, "Oh God".The sixth season of "Dexter" received mixed reviews from critics. According to Metacritic, the sixth season of "Dexter" received "generally favorable reviews" with a score of 63/100 based on 10 critic reviews. It is, however, the lowest rated season of the series on the site, and the only one to average a score that is below 70.