Basil Rathbone in "Sherlock Holmes in Washington" (1942). Sherlock's first visit to the USA. Entertaining.
Another Wartime (WW2) film showing how the USA and England worked together -- while Sherlock "saved the day". The "bad guy" in this film was smart but not as smart as Moriarty (not in the film) or Sherlock.
I looked up the film on IMDB and I found this bit of trivia which I found hilarious:
"The dubbed German version released in 1959 removed all Nazi references from the dialogue. The story of this edited version is about gangsters trying to get hold of a secret medicine formula that could be dangerous if in the wrong hands."
“Whoever fights monsters should see to it that in the process he does not become a monster. And if you gaze long enough into an abyss, the abyss will gaze back into you.”