Sara, daughter of Enma (the judge of the afterlife), offers the dead a "deduction game": if they correctly identify their murderer they are revived; if not, they are condemned to hell. The book is an episodic collection of mysteries and served as the author's debut (winner of the 55th Mephisto Prize).

Sara, daughter of Enma (the judge of the afterlife), offers the dead a "deduction game": if they correctly identify their murderer they are revived; if not, they are condemned to hell.