In “Dexter” Season 5 Episode 10 “In the Beginning” Dexter prepares for the final phase of his and Lumen’s cat-and-mouse game with Jordan Chase, the murderous self-help guru who helps people rape and torture women to death.
Dexter ships his young son to his grandparents and stashes Lumen in his old apartment, the latter observed by Quinn’s investigator, Liddy. Spoilers follow.
Worse than Liddy’s snooping, from Dexter’s point of view, is the fact that the police have reopened the barrel women case, having discovered extra DNA on the evidence. Since Cole, the head of security for Jordan Chase, was once a primary suspect, before Dexter artfully redirected the police toward Boyd, Cole is now a suspect once again. The problem is that his body parts are now at the bottom of the ocean, courtesy of Dexter.
However, Debra and Quinn do find some DVDs of women being raped and tortured to death by Jordan’s ring, albeit with the faces of the tormentors obviously not shown. It takes a clever slight of hand for Dexter to retrieve the recording of Lumen’s torment.
Dexter and Lumen locate the living person whose blood Jordan wears in a vial around his neck. She knew the members of the ring when they were younger and, though she survived the experience, was able to identify one other member, Alex, a banker.
But then Debra and Quinn also discover the identify of Alex through other means. Dexter and Lumen snatch Alex from his home and spirit him away to a vacant house next door. Dexter takes his blood sample and then Lumen takes his life. At the same time, Debra and Quinn are in Alex’s house next door and surmise that Alex has been taken somewhere against his will. Quinn notices a small footprint of a woman outside, obviously Lumen’s, and they both surmise that one of the victims has gotten away and is now out for blood.
The execution of Alex releases something within Lumen. Back at the apartment, she seduces and has sex with Dexter. The fact that he is a killer does not concern her in the slightest. She is a killer now too. She, in fact, enjoyed the kill. Is it just getting back at a beast who did things to her that were unspeakable? Or has she grown to enjoy the very act for its own sake, her soul twisted into something unrecognizable by what was done to her?
Source: Dexter, In the Beginning, TV.Rage