Just a wild guess, but the new killer for season 8 is Dexter himself - Trapped in a dual-personality scenario.
Dex appears to die in the final episode, but you see a shot of Hannah McKay, and someone who looks like Dexter driving off into the sunset...
Dex appears to die in the final episode, but you see a shot of Hannah McKay, and someone who looks like Dexter driving off into the sunset...
