The final of fourteen films starring Basil Rathbone and Nigel Bruce as the definitive Sherlock Holmes and Dr. John Watson. After the disappearance of a collectible music box, and the murder of its owner, the detectives face increasing danger. After an attempt is made on Holmes's life, he and Watson race to crack a coded message with answers to this twisted mystery.

Medvirkende

Patricia Morison

Arthur Conan Doyle

Frederick Worlock

Nigel Bruce

Basil Rathbone

Roy William Neill

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