Grace and Amber share a harrowing past: they both escaped the clutches of the same vicious psychopath. After dealing with him, they went their separate ways, determined to reclaim their lives. Surprise: neither of them is very good at being 'normal.' Despite their best efforts, they both feel an irresistible pull toward the dark side. When a friend's Vegas wedding reunites these reluctant allies, they uncover something chilling: a dangerous killer is targeting their inner circle. With time running out and bodies piling up, Grace and Amber must tap into their hard-earned survival skills. They've outsmarted a murderer before, but this time, the stakes are higher and the killer is smarter... can they do it again?