When a friend of Charlie’s is found kicked to death by his own race horse on board a Honolulu-bound liner, the detective discovers foul play and uncovers an international gambling…

A dangerous amnesiac escapes from an asylum, hides in the opera house, and is suspected of getting revenge on those who tried to murder him 13 years ago.

While visiting the circus with his family, Charlie is recruited by the big top’s co-owner to investigate threatening letters that he’s received.

An insane surgeon’s obsession with an actress leads him to replace her wounded pianist husband’s hands with the hands of a knife murderer–hands which still have the urge to throw…

When a prominent official is murdered at a banquet honoring Charle Chan, the detective and son Lee team up to expose an opium-smuggling ring.

Charlie’s visit to Paris, ostensibly a vacation, is really a mission to investigate a bond-forgery racket. But his agent, apache dancer Nardi is killed before she can tell him much….