The third of the 5-film series, and the first to feature Marjorie Reynolds as Captain Street's reporter girlfriend. Later remade as a Charlie Chan feature, The Chinese Ring (1947).
Marjorie Reynolds' character of intrepid gal reporter Bobbie Logan would be reprised in the next two Mr. Wong films as well, The Fatal Hour (1940) then Doomed to Die (1940). She is arguably best remembered for playing the long-suffering wife Peg in The Life of Riley (1953), and for her role in Holiday Inn (1942), in which she was Fred Astaire's partner for a drunken New Year's Eve dance routine and was the blonde to whom Bing Crosby first sang the Oscar-winning song "White Christmas."
When it came to playing characters of diminutive stature - dwarfs, pygmies, circus midgets and the like - few bit players were as busy as 2'11" Angelo Rossitto, who has nearly one hundred titles in his IMDb filmography, ranging from classics like The Greatest Show on Earth (1952) and The Sign of the Cross (1932), to recurring roles in the TV series H.R. Pufnstuf (1969) and Lidsville (1971). He is probably best remembered for his featured role in Freaks (1932), and one of his last appearances, a walk-on, as a fruit vendor in the campy disco classic Can't Stop the Music (1980).
This film received its earliest documented telecast Sunday 15 March 1942 on New York City's pioneer television station WNBT (Channel 1). Post-WWII television viewers got their first look at it in Los Angeles Wednesday 9 November 1949 on KTLA (Channel 5), in Cincinnati Tuesday 29 November 1949 on WKRC (Channel 11), in San Francisco Tuesday 17 January 1950 on KPIX (Channel 5), and in New York City Thursday 23 February 1950 on the DuMont Television Network's WABD (Channel 5).
This film can be found on many multi-film horror collections on DVD because of its star, Boris Karloff.