If you can get past racial slurs such as the description of several murdered Chinese as "better dead than alive" or the likening of Asian people to monkeys, Bela Lugosi's thick Hungarian accent, and some inconsequential jabbering between Wallace Ford and Arline Judge, Mysterious Mr. Wong may be for you. If not, you're in for a long, tedious tour of a backstage Chinatown peopled by the likes of the aforementioned Mr. Lugosi, Edward Peil and Fred Warren, in other words, low-budget Hollywood actors in bad Oriental get-up. Mysterious Mr. Wong, incidentally, has nothing in common with the later series of surprisingly clever whodunits starring Boris Karloff.