Dexter 6x12 This is the Way the World Ends Season 6 Season 0 0 EpisodesSeason 1 12 EpisodesSeason 2 12 EpisodesSeason 3 12 EpisodesSeason 4 12 EpisodesSeason 5 12 EpisodesSeason 6 12 EpisodesSeason 7 12 EpisodesSeason 8 12 Episodes 6x1 - Those Kinds of Things 6x2 - Once Upon a Time... 6x3 - Smokey and the Bandit 6x4 - A Horse of a Different Color 6x5 - The Angel of Death 6x6 - Just Let Go 6x7 - Nebraska 6x8 - Sin of Omission 6x9 - Get Gellar 6x10 - Ricochet Rabbit 6x11 - Talk to the Hand 6x12 - This is the Way the World Ends 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.