Why Lumen Left Dexter?

Dexter executive producer Sara Colleton told EW there was always a possibility for Lumen to return because she's alive and her relationship ending amicably with Dexter, but they wanted her to break up with him and leave because it shows that someone can have their dark passenger for a time and abandon it to lead a ...

Why did they get rid of Lumen Dexter?

Dexter realizes that she harbors a "Dark Passenger" much like his and agrees to help, in part to find his own closure following Rita's murder. ... Lumen leaves Dexter in the season finale, however, after realizing she no longer feels the need to kill. Lumen exited the show following the events of "The Big One".

Where did Lumen go in Dexter?

When they were through with her, Lumen was taken to the attic in Boyd Fowler's house. It was his job to kill her and get rid of her body. However, before he was able to do so, Dexter Morgan realized that Boyd was a serial killer and murdered him.