Pursuit to Algiers

Pursuit to Algiers 1945 is the twelfth entry in the Basil RathboneNigel Bruce Sherlock Holmes film series. The film takes some characters and events from The Adventure of the Red Circle. Elements in the story pay homage to an otherwise unrecorded affair mentioned by Watson at the beginning of The Adventure of the Norwood Builder, notably the steamship Friesland.

Arrangements have already been made for an airplane. When it develops problems, a smaller replacement only has room for the prince and Holmes, leaving Watson behind. When Watson protests, Holmes suggests he follow on a passenger ship bound for Algiers.On the voyage, Watson reads that the airplane has crashed in the Pyrenees and that it is unlikely that there are any survivors. Fortunately, Holmes has an aversion of plans made by others and is aboard the ship with Nikolas. He instructs Watson to introduce the prince to the other passengers as his nephew. Though Watson suspects everyone, from American singer Sheila Woodbury to exercise fanatic Agatha Dunham to a secretive pair who later turn out to be archeologists, of being killers, it is not until the ship makes an unscheduled stop at Lisbon that the real Russian agents come aboard Gregor, circus knife thrower Mirko, and a hulking mute named Gubec. ........

Source: Wikipedia