Jukkakukan no Satsujin (The Decagon House Murders) is a mystery novel written by Ayatsuji Yukito (famous in the west for writing Another). It was originally published in 1987.
In 2019, it was adapted into a manga drawn by Kiyohara Hiro (who also drew the Another manga).
In 2024, the novel was adapted into a five-episode drama.
