When a woman pleads amnesia in the death of her husband, Nick and Nora can forget about playing it safe as they track down the killer . . .

Six years ago, Mariah Blackthorne was found lying on the floor of her home, unconscious, holding the murder weapon that had killed her husband. Swearing she had no memory of the tragic event but insisting she was innocent, she nonetheless agreed to a plea deal and went to prison for the crime. Now, out on parole and desperate to know the truth, she enlists the help of local sleuth Nora Charles to find out what really happened that day—even if it means discovering she was the guilty party after all.

Intrigued by the case and convinced of the woman's innocence, Nora agrees to investigate. With her trusty sidekick warning her that they were headed for trouble, she unearths no shortage of suspects from the dead man's past. But as she follows every incriminating clue linking the victim to his fellow doctors and even a long string of mistresses, vicious threats begin piling up telling Nora to back off. Facing down a killer who will kill again to conceal their guilt, she and Nick may end up solving a case they won't live to remember . . .