Despite my summary, I DID like this film. It's just that despite its title, the film looked like they stuck in some stock footage and everyone in the film spoke English. Plus, oddly, the Brazilian police inspector spoke MUCH better English than Charlie--he remembered to use all his definite articles (such as 'the')! This isn't a major problem about the film, but it is kind of funny.
The plot involves the murder of a woman who is already wanted for murder. The rest of the film is just about what you'd expect from a Charlie Chan film made by FOX--Charlie's son (in this case #2) is a bumbling and obnoxious assistant, there are twists and turns and many different suspects, and in the end, Chan catches the murderer. No major surprises, but it was a bit odd seeing the wonderful magic potion developed by the psychic--just smoke one of his special cigarettes, drink a bit of coffee and you almost instantly fall asleep and tell the truth! If only this were true--imagine the fun you could have with your friends! This is a completely average outing for the series--not bad, nor especially compelling. For fans, it is pretty much what they'd expect and for the non-Chan fans out there, probably not enough to make them love the series.