Producer John Stone and Director Eugene Forde's last Chan films. By now Stone had done over a dozen and Forde had directed four. Sidney Toler (who appears to be ill in portions of the movie) is supported by #2 son Jimmy and #7 son Willie (Layne Tom, Jr. who was once cast in `Charlie Chan at the Circus' as #2 son Charlie Jr. and in `Charlie Chan in Honolulu' as #5 son Tommy). Lionel Atwill and Leo G. Carroll both add to the drama but Charles Middleton is best remembered in the Flash Gordon films as the Emperor Ming. Cora Witherspoon provides great comic relief. Don Beddoe is credited as playing `James' Ross but introduces himself to Chan as `Frederick' Ross, weight 168 lbs, 5'10', and he will admit to being 35.
Fast-paced who-done-it set primarily aboard a ship bound between Honolulu and San Francisco. A 'round the world cruise by ten travelers has been beset by a series of deaths by strangulation. It is clear from the beginning of the film that the guilty party is a man dressed in a dark hat and raincoat with dark classes and a full beard. But none of the passengers look like that.
Scotland Yard Inspector Duff is sent to investigate only to die as the film opens. Interesting subterfuge will keep the viewer off balance and probably unable to keep up with Chan until all is revealed at the end. `Man can more safely search for gold if world think he dig ditch.' Recommended.