Detective Conan S01 E1111 Rube Goldberg Machine (1)

"One truth prevails."

A job brings Conan, Ran, and Kogoro to a resort area in Gunma Prefecture, where they run into Inspector Yamamura investigating a case. Inoue Kohei was murdered by Rube Goldberg Machine, a device made up of a chain reaction of many simple gimmicks.