Dexter 1x6 Return to Sender Season 1 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 1x1 - Dexter 1x2 - Crocodile 1x3 - Popping Cherry 1x4 - Let's Give the Boy a Hand 1x5 - Love American Style 1x6 - Return to Sender 1x7 - Circle of Friends 1x8 - Shrink Wrap 1x9 - Father Knows Best 1x10 - Seeing Red 1x11 - Truth Be Told 1x12 - Born Free The Ice Truck Killer leaves a clue at the scene where Dexter has dispatched his latest victim, and Dexter is worried that someone might have witnessed his killing. Rita is trying to deal with her ex-husband.