A tiny twitch at the corner of the mouth, the slightest change in the pupil is enough to read a person's true self: Hannah Herbst is Germany's most experienced expert in facial resonance, specializing in the secret signals of the human body. As a consultant for the police, she has already exposed numerous violent criminals. However, just as she is struggling with the aftermath of memory loss following an operation, she is confronted with the most horrific case of her career: a previously completely upstanding woman has confessed to brutally murdering her family. Only her young son Paul has survived. After her confession, the mother manages to escape from prison. Is she searching for her son to complete her "death mission"? Hannah Herbst has only the short confession video to expose the mother and save Paul. The problem: the murderer in the video is Hannah herself. Her only way out leads deep into her own inner self.

With professional advice from Dirk Eilert, the leading expert in facial expressions and body language in the German-speaking world.