On a stormy summer day the Aosawas, owners of a prominent local hospital, host a large birthday party. The occasion turns into tragedy when 17 people die from cyanide in their drinks. The only surviving links to what might have happened are a cryptic verse that could be the killer's, and the physician's bewitching blind daughter, Hisako, the only person spared injury. But the youth who emerges as the prime suspect commits suicide that October, effectively...