In World War II, a British secret agent carrying a vitally important document is kidnapped en route to Washington. The British government calls on Sherlock Holmes to recover it.
Not streaming on a subscription service in the US right now.
Starring Basil Rathbone, Nigel Bruce, Marjorie Lord, Henry Daniell, George Zucco, John Archer, Gavin Muir, Edmund MacDonald, Don Terry, Mary Gordon