Can ghosts really talk? J.J. Graves is about to find out when her past comes back to haunt her. But before she and Jack can resolve her past, they need to deal with his. Six years ago Jack was left for dead during a SWAT raid he commanded. He never speaks of what happened that day, but he doesn't have a choice after someone starts murdering his men. According to the FBI, Jack is either next on the list, or he's the one behind it all.