Directly from solving successfully the London murder mystery, Charlie Chan goes on to Paris - on account of a British bank, who's discovered there's some strange business with bonds going on at a Parisian bank, with huge sums of money involved, of course. In Paris, Charlie has got an undercover helper who's been working on the case for a while and has gathered quite some information; and they agree that he and the beautiful young dancer meet right after her performance - but, there's a pretty gruesome beginning to this new case: at the end of her magnificent dancing performance, pretty Nardi is brutally stabbed before she can give any information to Charlie.
At least, he finds something in her apartment: a notebook with everything she'd found out, which contains the name of one of the bank's employees, Dufresne, who's been spending surprisingly high amounts of money lately... But Dufresne is soon murdered himself, and the suspicion falls on the bank director's daughter Yvette, who once had an affair with him; then there is Victor Descartes, now Yvette's fiancée and also an employee at the bank, their friend, painter Latouche - and a mysterious, crippled beggar who always seems to turn up near the scene of every crime...
Sounds complicated? In fact, it IS, and it requires absolute attention by the audience - and of course of by Charlie, who's in constant danger... To his good fortune, his 'number 1 son' Lee (Keye Luke, in his first appearance in the series) appears in Paris to assist his father! Another VERY well done classic crime mystery, absolutely worth watching and still fresh after 80 years...