Gareth, a.k.a. The Gemini Killer (David Dastmalchian), has been the most mysterious of Leon Prater’s (Peter Dinklage) serial killer dinner party guests in Dexter: Resurrection. He quietly lurks in the background as the others share stories and conversation about their work. Every once in a while, he weighs in with an opinion. But he’s not as open as Lowell (Neil Patrick Harris), as personable as Mia (Krysten Ritter), nor as jovial as Al (Eric Stonestreet). He’s also rumored to be one of the most deplorable of the killers.

See Full Page