Tonight: the re-run of the season 6 finale episode "This is the Way the World Ends" on Showtime. The episode was written by Scott Buck and Wendy West and directed by John Dahl.
In the Season 6 finale, Dexter and Homicide race against a lunar eclipse to catch the Doomsday Killers before their final gruesome act; Debra struggles with a new emotional reality.
Refresh your memory by watching the promo below and find everything about the episode here.