The first of a series of films on the Chinese detective Mr Wong starring the somewhat non-Chinese Boris Karloff. Mr Wong investigates the murder of the owner of a chemical company who has been apparently killed by poison gas. Grant Withers plays the police chief who blunders all over the place until Mr Wong solves the case for him.
Although a pretty low-budget affair this is a highly entertaining detective film. There are quite a few twists and the crimes are quite ingenious.
Karloff's Mr Wong is an interesting character, lets just say there are quite a few old stereotypes on show.