Allen Colby, heir to a huge fortune, is presumed drowned after an ocean liner sinks off the coast of Honolulu. Mysteriously, Colby reappears at his mansion only to be murdered soon after. When his body is discovered during a seance, everyone in attendance becomes a suspect, and it's up to Chan to find the murderer before he or she strikes again.
Unfortunately the movie Charlie Chan's Secret is not yet available on HBO Max.
| Art | Duncan Cramer | Art Direction |
| Costume & Make-Up | Helen A. Myron | Costume Design |
| Camera | Rudolph Maté | Director of Photography |
| Art | Albert Hogsett | Art Direction |
| Directing | Gordon Wiles | Director |
| Editing | Nick DeMaggio | Editor |
| Production | John Stone | Producer |
| Writing | Joseph Hoffman | Dialogue |
| Sound | Samuel Kaylin | Music |
| Production | Sol M. Wurtzel | Executive Producer |
| Writing | Earl Derr Biggers | Characters |
| Writing | Helen Logan | Screenplay |
| Writing | Robert Ellis | Screenplay |
