Set in a Tokyo flat over the course of one night, Aki and Hiro spend one last night together before going their separate ways. Each believes the other to be a murderer and is determined to extract a confession before the night is over. Who has been killed and why? Which one is the killer? In an intense battle of wills the true nature of the pair's relationship and the chain of events leading up to this night are gradually revealed. rom the author of "The Aosawa Murders".