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 2)
Meanwhile, Dexter's relationship with Lila becomes closer as she shows him how to accept who he is. When Rita discovers Dexter spend an evening in a hotel with Lila, she breaks up with him and Dexter ends up sleeping with Lila for the first time. Dexter learns that Lila is a pyromaniac, at one point purposely setting fire to her apartment and feigning innocence to draw Dexter back to her. When she starts to follow him obsessively, he takes measures to distance himself from her, eventually foregoing their relationship. Realizing he is developing genuine connection to Rita and her children Astor and Cody, Dexter returns to them. Lila is furious and begins to track Dexter's movements, while also dating Detective Angel Batista. Dexter warns Batista that Lila is not to be trusted but he dismisses the concern. Later, Lila brings rape charges against Batista and tells Dexter she'll drop them if he returns to her. Debra investigates Lila and finds that she is in the country illegally, threatening her with deportation if she doesn't leave Miami.