Two months ago a serial killer brutally attacked police detective Alisha Green and left her for dead. Ali has two enemies now: the dangerous man she's hunting and her own failing memory: she still has trouble recalling simple things. As explosive new evidence comes to light and conflicting accounts from a witness and a surviving victim threaten both her investigation and her credibility, she begins to question what is and isn't real. She has no choice but to remember the past-- before it buries her.