十角館の殺人 [Jukkakukan no Satsujin] #3

This is the third volume of the manga adaptation of Yukito Ayatsuji's classic mystery novel 'The Decagon House Murders,' published by Kodansha in their Afternoon KC imprint. It continues the story of a group of university students who travel to a remote island where a series of murders unfold in a locked-room mystery inspired by the works of Agatha Christie.