One Mysterious Night

The famous Blue Star diamond is on display at a war fund benefit. Cops are everywhere to prevent any funny business, but—what's this? A sudden row in the gallery, a bunch of noise and commotion, and…the diamond is gone! (It looked pretty easy to me, actually.)

Of course, Inspector Farraday jumps immediately to the conclusion that the only man who could have stolen the diamond is Boston Blackie. But just a moment; it is soon revealed that his loud accusation is nothing other than Farraday's way of "sending for" Blackie. Sure enough, Blackie soon arrives at Farraday's desk and—in a nice new twist to the series—Farraday explains to Blackie that he needs his help: "Now you can call me anything you like, but I'm deputizing you as my assistant on this case, and I'm not taking no for an answer!" The Runt is doubtful, but Blackie readily agrees, is handed a badge, and gets right to work on a disguise or two.

The plot revolving around the stolen gem involves a young man mixed up with a gang of crooks, and the worried sister who lives with and tries to guide him. The sister is played by a very young Dorothy Malone, who has a small role but puts in a fine bit of actual dramatic acting in the scene in which she chews out her brother for falling in with the bad guys.

Chester Morris and Richard Lane are, as always, fun to watch as Blackie and Farraday, and seeing them as a "team" (with the exception of a brief spell where Farraday revives his habitual old suspicions) adds a bit of new life to this episode. George E. Stone as the Runt is faithful but worried as the loyal assistant.

We never do find out, however, just how blond reporter Janis Carter is able to see through Blackie's disguise so quickly. But she sure seems to enjoy chasing him around for the whole movie!