https://www.penguinrandomhouse.com/books/665243/the-decagon-house-murders-by-yukito-ayatsuji/
The Decagon House Murders by Yukito Ayatsuji: 9781782276340 | PenguinRandomHouse.com: Books
"Ayatsuji's brilliant and richly atmospheric puzzle will appeal to fans of golden age whodunits... Every word counts, leading up to a jaw-dropping but...
the decagon house murdersyukito ayatsujipenguinrandomhouse com