Memoirs of a serial killer... Hiroki Dan is a brilliant homicide detective, the top of his class, and also the son of the general superintendent of police. He is a promising young man who seems destined to have a meteoric career to the highest ranks of the police force. But he has a secret... And that is that he is a serial killer who has killed more than a hundred people and who, so far, has managed to escape the law. These are the confessions of his crimes and his cat-and mouse game with the police.