Karloff's Wong compares quite favorably to the various screen interpretations of Charlie Chan. He doesn't play a stereotypical Chinese according to Hollywood formula (and neither does Keye Luke in a later film in the series). Karloff brings a wit and a quiet air of command to the character, he is always moving steadily toward a solution to the crime at hand. He presents Wong as quite the most intelligent character in every film. The mysteries themselves are about average for the period. In most of the Wong films the clues are there for the audience if they care to look for them. Also, one must remark the important part Grant Withers plays, as the earnest, tough, but slightly dimwitted police Captain Bill Street, and the occasional appearance by Marjorie Reynolds as the sassy reporter Bobbie Logan who dates Street off-hours, only to interfere when at work. They bring a pleasing air of continuing romantic interest as well as comic relief to the series.