Mechanically effective second tier entry in the often second-best modernised series. It’s all rather par of the course by this point in the sequence, with Rathbone and Bruce treading the metaphorical water. However it’s a lively enough diversion, but one that is closer to the spirit and devices of Christie and White (The Lady Vanishes) than Conan Doyle, but veracity was never the strong point of the Universal films.
The penultimate film in the Rathbone/Bruce series finds Holmes protecting a diamond on a train enroute to Scotland only to run afoul of another criminal mastermind. Pretty much by the numbers though Dennis Hoey's Lestrand is finally put to good use.
Another watchable classic Basil Rathbone Sherlock Holmes movie. Finally Dennis Hoey as Inspector Lestrade get to have an extended role for his final appearance in the series. It is a fast-paced entry too. The villain is obvious. Nigel Bruce is still incompetent as Dr. Watson and is just his usual self as an embarrassing comedic sidekick.