A mysterious murder, the justice men are unable to solve its mysteries, a skilled psychoanalyst in the crime scene, to pick up some minute details, through which he can draw a careful psychological visualization of the perpetrator, leads the laws to him, and provides him with justice on a plate of gold. It is the classic plot of psychological crime films and Sherlock Holmes' novels, so is this profession actually found on the ground? Where does the truth end in the narratives of police literature, and where does the imagination begin?