Henry Daniell, Nigel Bruce, Arthur Conan Doyle, Basil Rathbone, Roy William Neill, Bertram Millhauser, Lynn Riggs, Marjorie Lord

Sherlock Holmes in Washington is a movie starring Basil Rathbone, Nigel Bruce, and Marjorie Lord. Sherlock Holmes and Doctor Watson travel to Washington D.C. in order to prevent a secret document from falling into enemy hands.