Episode 3 S01 E03

Tomoya Oku (as Takaaki Kawaminami) Munetaka Aoki (as Kiyoshi Shimada) Akihiro Kakuta (as Koujiro Nakamura) Toru Nakamura (as Seiji Nakamura) Ayumu Mochizuki (as "Ellery") Neru Nagahama (as "Agatha") Yuki Imai (as "Leroux") Kosuke Suzuki (as "Poe") Reia Yonekura (as "Orczy") Rukiya (as "Carr") Hiroto Kobayashi (as Kyoichi Morisu) Asumi Kikuchi (as Chiori Nakamura) Mari Hamada (as Kuniko Matsumoto) Tamiyo Kusakari (as Masako Yoshikawa) Yasuyuki Maekawa (as Seiichi Yoshikawa) Aoba Kawai (as Kazue Nakamura) Tetsuhiro Ikeda (as Osamu Shimada)

based on novel or book island mystery