In this one, Charlie Chan bumps into a murder mystery involved with the psychic and astrological rackets, and proceeds to unravel the affair at a performance in a Treasure Island (San Francisco Fair) theatre.
Picture is rather slow in spots, but holds up generally to pace set by [some 25] previous Chan adventures to satisfy whodunit fans.
When fiction writer friend of Chan is suicide on Clipper plane bound for Frisco, Chan interests himself in uncovering the reasons. Trail leads him to Zodiac, a racketeering mystic, who holds clients in his power through threats of blackmail. Chan is assisted by Cesar Romero, operating illusionist theatre at the fair, and Douglas Fowley, reporter exposing rackets of the mystics and astrologists. Chan’s No. 2 son, Sen Yung, does much to confuse things.