The Sign of the Four

The Sign of Four The Sign of Four, is the second novel by Doyle to feature the famous detective Sherlock Holmes. Set in 1888 the plot revolves around complexities involving the Indian Rebellion and a stolen treasure. It marks the use of drugs by Holmes as a way to humanize him as well as introduce Watson's future wife Mary Morstan. Odin's Library Classics Odin's Library Classics is dedicated to bringing the world the best of humankind's literature from throughout the ages. Carefully selected, each work is unabridged from classic works of fiction, nonfiction, poetry, or drama.