The Moai Island Puzzle (孤島パズル, Kotō Pazuru, "Solitary Island Puzzle") is a 1989 Japanese mystery novel by Alice Arisugawa that falls into the honkaku (本格) subgenre of Japanese detective fiction.
[1] The novel is the second in a series featuring Jirō Egami as detective and the first Arisugawa book to be translated into English.
It details a series of murders that occur among a group of vacationers on an island off Japan's coast.
[2] Like other novels in the same series, a character named Alice Arisugawa takes part in the events and narrates them to readers by breaking the fourth wall.
The first English-language translation was published by Locked Room International in 2016.