Tonight's the Night | 5.10 ''In the Beginning"

 

Tonight on an all new episode, just as Dexter discovers a possible ally in the pursuit of Lumen's former captors, he and Lumen are forced to step down as Homicide uncovers some key evidence linked to one of their prior victims. Debra, who's been reassigned to the Barrel Girls murders, positively identifies two more suspects in the case.