This is my second look at a Boston Blackie adventure-mystery and it reminds me of the old Superman TV series in that most things that happen in here are totally implausible. There are more holes than in the proverbial slice of swiss cheese. The humor is very dated and corny, too - yet - it's still fun to watch in many parts. Credit for that goes to the filmmakers who made this short (a little over an hour) and fast-moving.
I also enjoyed seeing Harriet Hilliard who went on to big fame in the United States as the "Harriet" Nelson in the "Ozzie and Harriet" TV show. As "Diane Parrish," she's a cutie and a sweet thing, as she played in other roles such as "Follow The Fleet" with Fred Astaire.
Storywise, it's the similar Blackie story (I assume) in which "Inspector Faraday" (Richard Lane) collars our smug hero for a murder he didn't commit, and then stupidly loses him several times. We also have Blackie's dim-witted helper "Runt" (George E. Stone) and we have a millionaire in here who is unrealistically portrayed as dumb like Runt. He was played by a familiar actor to TV watchers in the '50s and '60s: Lloyd Corrigan. The name might not mean anything but when you see his face and hear is voice, he's very familiar.
This is fast-action "B" movie action and comedy that is fun but beware: it's so dated it can look really stupid. Frankly, I thought the first movie was better.