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.
Alternative titles: El secreto de Charlie Chan | Charlie Chans Geheimnis | O Segredo de Charlie Chan | Charlie Chans Hemmelighed | Charlie Chan kuolemanvaarassa | Le Secret de Charlie Chan | Το μυστικόν του Τσάρλι Τσαν | Charlie Chanova tajna | Éjféli szeánsz | L’ora che uccide | Charlie Chan na Califórnia | Charlie Chans hemlighet | Charlie Chanova skrivnost | Секрет Чарли Чана | Charlie Chan in San Francisco