Charlie Chan’s Secret is the tenth Fox-produced film in the Charlie Chan series with Warner Oland as the detective.

Plot:
Alan Colby, heir to a vast fortune, reappears after a seven-year absence, only to be murdered before he can claim his inheritance. The Lowells have been living off the Colby fortune, and now someone is trying to kill Henrietta Lowell, matriarch of the family. Among the suspects are: