Having once again avoided criminal conviction, Professor Moriarity develops a murderous plan to “finish off” his last major nemesis, Sherlock Holmes, by making him fail to prevent the perfect crime. Does it involve a family curse, the crown jewels of England, or something else…

Basil Rathbone
as Sherlock Holmes

Nigel Bruce
as Dr. Watson

Ida Lupino
as Ann Brandon

Alan Marshal
as Jerrold Hunter

Terry Kilburn
as Billy

George Zucco
as Professor Moriarty

Henry Stephenson
as Sir Ronald Ramsgate

E. E. Clive
as Inspector Bristol

Arthur Hohl
as Henchman Bassick

May Beatty
as Mrs. Jameson, Brandon Housekeeper
CinemaSerf
My personal favourite of these Rathbone/Bruce combinations. This time, the fiendishly clever Professor Moriarty (George Zucco) intends the crime of the century and so has Holmes and Watson distracted by an ominous series of murders whilst he sets about perpetrating his true desire. Henry Stephenson ...