Thirty years ago, in the sleepy community of Waterbury, a killer known as "The Executioner" murdered Sarah Bennett's parents. Now Sarah and her husband Dylan have returned to town, only to find herself the centerpiece in a series of horrifying murders centered around the seven deadly sins. It seems "The Executioner" is back. But if Tom Winston - the original Executioner - is behind bars, who is the new person behind the mask? As the murders escalate, long-buried secrets are revealed, making everyone around Sarah a suspect… or a victim.