The Sign of Four

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.

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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)

[Sherlock Holmes: The Novels](https://openlibrary.org/works/OL16018654W)

[The Sign of the Four, A Scandal in Bohemia and Other Stories](https://openlibrary.org/works/OL20630338W)

[Sign of the Four and Other Stories](https://openlibrary.org/works/OL20628655W)

[Tales of Sherlock Holmes](https://openlibrary.org/works/OL1518350W)

[Tales of Sherlock Holmes](https://openlibrary.org/works/OL1518418W)

[Works](https://openlibrary.org/works/OL16173818W)