Steven Yeun's time on The Walking Dead [1] might be over [2], but that doesn't mean he's left blood and gore behind. The actor plays the extremely disturbing lead in Mayhem, whose office building is beset by a virus that turns normal employees into unhinged, bloodthirsty aggressors who are all promptly locked inside for eight hours by the CDC. The horror flick — which has some major The Belko Experiment [3] vibes — also stars Samara Weaving and will hit theaters, video on demand, and digital HD on Nov. 11.