Pietro Gerber is a psychologist, but not like the others. His specialty is hypnosis, and all his patients are children who have experienced something—those who suffered trauma, witnessed dramatic events, or whose fragile memories contain important information that could help the police or child protective services in an investigation.
But then, from the other side of the world—Australia—a colleague calls him and asks him to take a patient. Pietro is puzzled: why reach out to him when Hanna Hall is an adult? It turns out a young woman can’t get rid of a memory of a certain murder—something she seems to have committed in childhood. And to determine whether it’s true or an illusion, she needs the best psychologist in Florence—Pietro Gerber.