Ankokukan no Satsujin

Yakata Series
館シリーズ

Adaptation

The Decagon House Murders
Jukkakukan no Satsujin· 十角館の殺人
manga

The members of a particular university's Mystery Club travel to a ten-sided house on a remote island...which just happens to have been the scene of a gristly, and unsolved, mass murder. Armed with details of the murder and keys to the property, they set out to dig deeper...but can they trust the "facts" of the case? And moreover...can they trust each other? (Source: Kodansha USA)