A "treasure hunt cruise" is all lined up—but the ship never leaves the dock in this mystery featuring a pirate ghost, a treasure map, a couple of murders, and the usual lineup of suspicious characters.
Jimmy Chan helps get the action started by sneaking aboard the darkened ship to investigate, his imagination fired by news about the expedition to retrieve $60 million of hidden treasure. Pop Charlie Chan comes looking for Jimmy, intending to take him home—which is how both Chans happen to be on the ship when the first murder occurs.
Sidney Toler is fine as always as the elder Chan; Sen Yung has a larger role than usual as Jimmy, and gives an energetic—practically manic—performance as the would-be detective whose curiosity is matched only by his enthusiasm. Toler and Yung, by now veterans of several films in these roles, complement each other perfectly.
The plot concerns an alleged treasure map, divided into four pieces and distributed among the would-be passengers. When the map's owner (and tour sponsor) is murdered and her map portion disappears, it becomes apparent that someone else on board is out to grab all four sections. Not surprisingly, practically all of the passengers and crew seem to harbor secrets of one kind or another
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The entire film is set inside the ship, outside in the harbor, or in a neighboring waterfront bar
and it all takes place at night. Nicely designed sets and good shadowy photography create an atmosphere that is sinister and just slightly spooky.
Jimmy Chan can't seem to keep out of the water in this one
.And my favorite line from the picture is the elder Chan's response to Jimmy's apology for falling in yet again: "Please. Save alibi for autobiography."