第 5 季 共 12 集
播出时间：2010年9月27日
第 1 集 My Bad
播出时间：2010年9月27日
Dexter must make a choice; Quinn stirs up trouble for Dexter but supports Deb.
第 2 集 Hello, Bandit
播出时间：2010年10月4日
Dexter tries to focus on the children and fight his dark urges; Debra ends up on Quinn's doorstep.
第 3 集 Practically Perfect
播出时间：2010年10月11日
Dexter hires a nanny; Debra is annoyed with her new partner; Quinn continues to investigate Rita's murder.
第 4 集 Beauty and the Beast
播出时间：2010年10月18日
Dexter must save a life; Deb has a confrontation with a key suspect; Quinn follows up on the similarities between Dexter and Kyle Butler.
第 5 集 First Blood
播出时间：2010年10月25日
Dexter is saddled with an unwanted conspirator; Dexter worries about how Rita's death will affect Harrison; Deb works alone; Quinn enlists an old friend's help.
第 6 集 Everything is Illumenated
播出时间：2010年11月1日
Dexter is drawn into a precarious situation; Batista discovers an interesting lead; Quinn gets information about Dexter from a questionable source.
第 7 集 Circle Us
播出时间：2010年11月8日
Dexter is called to investigate a horrifying crime scene; the Santa Muerte case leads to a violent standoff between Debra and the Santa Muerte killers.
第 8 集 Take It!
播出时间：2010年11月15日
Dexter and Lumen vet and stalk a violent killer; Debra gets into some unexpected trouble from the fallout of the Santa Muerte case
第 9 集 Teenage Wasteland
播出时间：2010年11月22日
Dexter and Lumen hunt for their next victim; Debra uncovers new evidence in the Barrel Girl case
第 10 集 In the Beginning
播出时间：2010年11月29日
Homicide uncovers some key evidence linked to one of Dexter's and Lumen's prior victims; Debra identifies two more suspects in the case.
第 11 集 Hop a Freighter
播出时间：2010年12月6日
Dexter must do damage control; Debra's speculation begins to take shape; Quinn becomes involved in a homicide.
第 12 集 The Big One
播出时间：2010年12月13日
Dexter's situation grows desperate when he discovers that Lumen's been set up. Despite knowing he's being baited into a trap, Dexter risks everything to make sure he doesn't fall into the same mistake again. In the Barrel Girls case, Debra lets her personal feelings lead her instincts once she concludes that vigilantes are more than just a theory. Quinn finds himself in a troublesome situation, which only Dexter can help him out of.
