The Misadventures of Detective Butler is a murder mystery (mis)adventure game series featuring the titular character Detective Butler and his sidekick Gilligan solving various mysteries.
The first game in the series, Maiden Voyage Murder, is a visual novel without choices, depicting the initial meeting between Butler and Gilligan during a summer cruise gone wrong.
Maiden Voyage Murder
The second game, The Serial Murders, is a 3D exploration game where you can actively investigate, interrogate, and confront various culprits in a city filled with crime as Butler and Gilligan hunt down a dangerous serial killer.
The Serial Murders