12 Episodes · Premiered September 26, 2010 · Ended December 12, 2010
In season five, Dexter comes to terms with the aftermath of the Season 4 finale, stopping a group of serial rapists and avoiding a corrupt cop who learns his deadly secret.
Rita's death has left Dexter feeling responsible and guilty for not being there to save her from the Trinity Killer.
In his new role as single father, an anxious Dexter tries to get his family's routine back on track, to begin the process of moving on from Rita's death.
Dexter finds it hard to adapt to a life without Rita. Quinn notices strange similarities between Trinity Killer associate "Kyle Butler" and Dexter.
Dexter finds himself in a strange situation when, instead of taking a life, he has to save one when he must decide what to do with a frightened young woman named Lumen.
When Dexter is burdened by an unwanted conspirator, he is forced to make some hard decisions.
Striving to bring some normalcy back into his shattered life, Dexter begins plotting to take down a serial killer, but his plans get thrown off course when Lumen requires his help.
By aiding Lumen, who has shot one of her attackers in an old warehouse, Dexter puts himself on a collision course with Debra, and risks being found out.
Dexter and Lumen take the opportunity to track a vicious murderer while attending a self-help seminar from Jordan Chase.
Dexter and Lumen are on the hunt for a new victim but get sidetracked by the arrival of a surprise visitor. Meanwhile, Debra digs up new evidence.
Just as Dexter discovers a possibly ally in the pursuit of Lumen's former captors, he and Lumen are forced to step down after some key evidence linked to one of their prior victims is discovered.
Dexter and Lumen's plans are momentarily thwarted when they come under scrutiny.
Dexter's situation grows desperate when he discovers that Lumen's been set up.
