2024, Ediciones B

A small twitch at the corner of the mouth, the slightest change in a pupil — that’s all it takes to “read” a person’s true self.

Hannah Herbst is an expert in deciphering the body’s hidden signals and, as a police consultant, has helped catch several dangerous criminals. While dealing with the aftermath of memory loss following surgery, she faces the most terrifying case of her career: a woman has brutally murdered her family and, after confessing, has managed to escape.

Hannah has only a short video in which the killer admits her guilt to analyze the case. The only problem is… the murderer in the video is Hannah herself.