"Is...is...that...?" Sandra stammered, extending a shaking finger. Janet looked to the edge of the lot, where a purse lay, partially hidden by a bush. Pulling the scarf from her neck, Janet used the ends to open the purse and pull out a wallet. "Go call 911, Sandra," she said tightly. The driver's license read, "Marylyn L. Markowitz, MD." The latest victim of the serial killer terrorizing New York City? Caught up in the paralyzing fear of monthly murders, Dr. Janet Hendrickson does not suspect that she is about to catch the attention of a killer.