Only two people in this world know my name. I am one. The other is believed dead. Dr Elizabeth Arlington keeps her past buried. But when a woman is killed in a train accident, she falls into old habits and examines the body. All evidence points to murder. Soon, a second victim is found, and a photograph left at the scene incriminates Elizabeth. Now the prime suspect, she must hurry to catch the killer before the police arrest her. But when he strikes again, Elizabeth discovers a terrifying truth.