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.
List of Dexter characters
Hannah and Dexter make plans to flee to Argentina but with the forces closing in on them, Dexter sends her and his son Harrison onto Jacksonville and from there they fly to Buenos Aires. She later reads of Dexter's boat sinking due to a hurricane and assumes Dexter had died. She becomes guardian of Harrison, practically adopting her "deceased" lover's (and killer accomplice) son.Isaak Sirko is a high-ranking member of the Koshka Brotherhood, a Ukrainian-based international crime syndicate with operations in Miami, and the main antagonist of Season 7. After the disappearance of Viktor Baskov, one of Isaak's top subordinates and his lover, Isaak travels to Miami, accompanied by his bodyguard and right-hand man, Jurg Yeliashkevych, in order to investigate Viktor's vanishing. Upon realizing that Viktor was killed, he sets out to avenge him. His trail leads him to Dexter's boat, the "Slice of Life", which Louis Greene was trying to sabotage. Louis tells Isaak that the boat belongs to Dexter Morgan, after which Isaak shoots him. Isaak begins to hunt Dexter, but Dexter becomes wise to it very quickly, and lures him into a bar owned by the Koshka Brotherhood's Colombian rivals, the Rojas Cartel. Three armed Colombians attack Isaak, but Isaak disposes of them. The evidence leads to Isaak being brought in by Miami Metro and later incarcerated.