The 2nd real Charlie Chan film, the earliest to survive of the 38 that Warner Oland and then Sidney Toler churned out over the next 16 years for Fox and Monogram. Pretty faithful to Earl Derr Bigger's book, this only suffers mildly from the echoey staginess associated with early talkies, with some erratic acting but also some lovely smoky visuals of "Honolulu".
A woman with a dark past is stabbed to death at a hotel - of course all of the guests along with the butler and maid are involved for Charlie to sort through and mull over. Unravelling the threads of the mystery Charlie proved his eyes had microscopic capabilities (wonder how much DNA fingerprinting would've slowed him down?) - and that he was one of those "very clever men able to bite pie without breaking crust". There's a beautiful scene with the entire Chan Clan at the breakfast table that's worth a look on it's own. It all runs delightfully true to form, the excellent polished cast playing up well, especially young Robert Young and Bela Lugosi.
I can't speak for everyone else of course but I still cherish the hope films 1/3/4/5 will one day be found for the additional 5 hours pleasure.