She Walks at Night

Yachiyo Furugami, plagued by episodes of sleepwalking, receives a series of cryptic letters culminating in an ominous warning: 'Walk not at night'. Then a body is discovered on the grand Furugami estate, decapitated with a centuries-old samurai sword. The police are baffled, so the famous sleuth Kosuke Kindaichi is called upon to solve the mystery, but before he can do so, the killer strikes again...