The Sign of the Four (1890), also called The Sign of Four, is the second novel featuring Sherlock Holmes written by Sir Arthur Conan Doyle. Doyle wrote four nov

Arthur Conan Doyle: The Sign of the Four (Illustrated) First published in 1890, The Sign of Four is Sir Arthur Conan Doyle's second book starring legendary dete

"I have been in the Valley of Fear... I am not out of it yet." "There - is - danger!" The warning message decrypted by Sherlock Holmes arrives too late to save

The Complete Novels of Sherlock Holmes includes A Study in Scarlet, The Sign of the Four, The Hound of the Baskervilles, and The Valley of Fear. Included are il

The Sign of Four, is the second novel featuring Sherlock Holmes written by Sir Arthur Conan Doyle. Doyle wrote four novels and 56 short stories featuring the fi