John David Horsley

Charlie Chan es contratado para entregar un collar de perlas a un millonario en su rancho. Cuando interviene el asesinato, se disfraza de criado chino y empieza a investigar.

A pilot and his dog crash-land on an island run by a psycho who owns a motel--and most of the locals.

College football player is asked to dope a star teammate by his crooked gambler brother. He refuses, but they player is doped anyway and collapses and dies. A detective has the whole game re-enacted to find important clues.