the Slice of Life and he didn't dismember his corpse before he disposed of his body in the Gulf Stream. Joseph Jensen (Mike Foy) is the Phantom Arsonist. After killing seven people in two weeks, Dexter tracks him down when he runs his fingerprints through juvenile records. He initially planned to kill the arsonist himself but, instead, he hands him over to the police department anonymously. Phil Bosso (Brett Rickaby) is an arson investigator, who Dexter suspected as the Phantom Arsonist. However, his selection of incendiaries turns out merely to be for Civil War reenactments. Arlene Schram (Nicole LaLiberte): the only witness to Hannah McKay's crime of poisoning a camp counselor. She later helps Hannah escape from prison. Hector Estrada (Nestor Serrano): a drug dealer and the leader of the three men who killed Dexter's mother, Laura Moser, for being a police informant. LaGuerta has him released from prison on parole in an attempt to trap Dexter, trying to prove he is a serial killer. Dexter eventually kills Estrada and Debra shoots LaGuerta. Dexter then makes it look like they both killed each other to prevent further police investigation into him. Minor characters in season 8 Lyle Sussman (Scott Michael Morgan): A hunter who is murdered on tape by the Brain Surgeon. Ron Galuzzo (Andrew Elvis Miller): Vogel's former patient who Dexter suspects of being the Brain Surgeon. Dexter discovers that he is not the Brain Surgeon, but rather a cannibalistic killer. Niki Walters (Dora Madison Burge): Masuka's long-lost daughter whom he hires as a lab assistant. Cassie Jollenston (Bethany Joy Lenz): Dexter's neighbor and Jamie's friend. Jamie attempts to set Dexter up with her, but it doesn't work out and she begins dating Oliver Saxon, who murders her. A.J. Yates (Aaron McCusker): Vogel's former patient and a serial killer with a foot fetish. Max Clayton (Kenny Johnson): a U.S. Marshal hired by Elway to track down Hannah McKay. Recurring background characters at Miami Metro PD Alongside the main characters and supporting characters, there are some members of the Miami Metro Police Department that appear on recurring basis through the series, but only as background characters. While the actors receive proper credit for their appearances, they do not have any influence on the storyline, and mainly operates in the background, assisting the other characters. These characters include Detective Angie Miller (portrayed by Dana L. Wilson in the seventh and eighth