Silent Witnesses (Anna Kronberg Thriller, #5)

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.