Twenty million in diamonds missing. Kate Sawyer, a cop in witness protection, holds the key. If she could only remember. Early-onset Alzheimer's clouds the past. Stem cell therapy is working to clear it. But time is running out for Kate. One night she finds a dead man in her bathtub with a note stuck in his pocket. I know what you've done. Her cover blown, Kate runs, the clock is ticking. People close...