after several challenging cases and a marraige that was disintegrating, fbi supervisor, jack donovan aacepted an invitation to a week-long murder mystery party from his old friend, rob. it was to take place in october in a spooky castle on a private island four miles from salem ma. jack had an ulterior motive for accepting the invitation. he was hoping to reconnect with his long-lost love, cate montgomery who was also coming to the party. the guest list was a reunion of twelve friends who grew up together during their summers at a child's summer soccer camp decades earlier. it was a reunion for them. jack was shocked though when he learned that their twelve names was on a killer's hit list. now, jack had to solve the murders and save his beloved cate, before she was the next one to die. cate, like everyone else at the party had her own secrets.