Layton Mystery Tanteisha: Katori no Nazotoki File (Layton Mystery Detective Agency: Kat's Mystery Solving Files) takes place during the events of 'Layton's Mystery Journey: Katrielle and the Millionaires' Conspiracy'.
日高法子,兴梠里美,小樱悦子,木内秀信
山寺宏一,林原惠美,生天目仁美,原纱友里,梶裕贵,大谷育江,土田大,伊濑茉莉也,日笠阳子,三木真一郎,上田祐司,松本梨香,牧口真幸,犬山犬子,胜杏里,符爽,野岛裕史,汪世玮,藤田茜,石松千惠美,詹雅菁