In the last of Universal studio's trilogy of investigations by Sherlock Holmes (Basil Rathbone) into Nazi spy activity, the legendary sleuth travels to the US capital with the amiable Dr. Watson (Nigel Bruce) to locate some missing McGuffin. America are now allies, UK fortunes have improved, and this is easily the most cheerful of the three WWII entries.
And Watson has rarely been stupider, as he samples the US way of life. Which is milkshakes and chewing gum... And whatever the Doctor says, Holmes' deductions are not all that amazing. But this is particularly well directed by Roy William Neill with plenty of suspense as the duo track down some microfilm hidden in a book of matches.
Production values are high for a low budget programmer. There are auspicious villains in George Zucco and Henry Daniell, who both also played Moriarty in the series. And it's always nice to see the African-American actor Clarence Muse in a cameo.
So it's goodbye to the weird Roman haircut Holmes wore to fight the Nazis. After this, the series was overhauled to produce films still set in the '40s, but more evocative of Arthur Conan Doyle's original adventures. And while those are better, this remains a quality blend of intrigue and comedy, and a whimsical diversion from the real life troubles of the world...