A child disappeared in a park in the suburbs of Rome. Not far from the place where the boy was last seen, the body of his mother was found. Investigators suspect the head of the family. Colomba Caselli, who arrived at the crime scene, categorically disagrees with the official version. However, she has to investigate the case privately, because after the tragic events associated with the deaths of people in a Parisian restaurant, she is ready to resign. And yet, the head of the department introduces Colomba to Dante Torre, an expert in the search for missing persons and child abuse. He is said to be a genius, although his deductive abilities are complicated by numerous phobias and paranoia, as Dante was also kidnapped as a child. The search was quickly called off and police believed the boy was dead. In fact, he spent many years imprisoned in a silo, and the only person he saw for many years was a mysterious man who hid his face. Dante called him Father. And in the new case of the disappearance of a child, the Father’s handwriting clearly appears.