The Adventure of the Devil's Foot

Sherlock Holmes and Dr Watson are travelling in Cornwall when Mortimer Tregennis comes to them with the strangest of cases. His sister Brenda was found dead next to their two brothers, George and Owen, who had gone mad. They had spent the evening playing whist together. Tregennis is convinced it’s the work of the Devil. The housekeeper fainted upon finding them, and so did the doctor who was summoned. It seems that Sherlock Holmes will have to outsmart the Devil himself to solve this case.
"The Adventure of the Devil´s Foot" is part of "His Last Bow".
Sir Arthur Conan Doyle (1859-1930) was born in Scotland and studied medicine at the University of Edinburgh. After his studies, he worked as a ship’s surgeon on various boats. During the Second Boer War, he was an army doctor in South Africa. When he came back to the United Kingdom, he opened his own practice and started writing crime books. He is best known for his thrilling stories about the adventures of Sherlock Holmes. He published four novels and more than 50 short-stories starring the detective and Dr Watson, and they play an important role in the history of crime fiction. Other than the Sherlock Holmes series, Doyle wrote around thirty more books, in genres such as science-fiction, fantasy, historical novels, but also poetry, plays, and non-fiction.