A New York Times Bestselling AuthorThe last thing Boston Detective D. D. Warren remembers is walking the crime scene, a creaking floorboard, a low voice in her ear. She is told she managed to discharge her weapon three times. All she knows is that she is injured, unable to return to work. Six weeks later, a second murder with the same calling cards. The only person who may have seen the killer: Detective D. D. Warren, who still can't recall a single detail from the night that may have cost her everything.