The Sign of Four

by Arthur Conan Doyle

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. ---------- Also contained in: [Adventures of Sherlock Holmes](https://openlibrary.org/works/OL20624138W) [Adventures of Sherlock Holmes](https://openlibrary.org/works/OL18191906W) [Annotated Sherlock Holmes. 1/2](https://openlibrary.org/works/OL1518438W) [Best of Sherlock Holmes](https://openlibrary.org/works/OL18195589W) [Boys' Sherlock Holmes](https://openlibrary.org/works/OL8696809W) [Celebrated Cases of Sherlock Holmes](https://openlibrary.org/works/OL16076930W) [Complete Sherlock Holmes](https://openlibrary.org/works/OL18188824W) [Complete Sherlock Holmes](https://openlibrary.org/works/OL14929975W) [Illustrated Sherlock Holmes](https://openlibrary.org/works/OL1518342W) [Original Illustrated Strand Sherlock Holmes](https://openlibrary.org/works/OL262529W) [Sherlock Holmes: His Most Famous Mysteries](https://openlibrary.org/works/OL14930414W) […