<p>2020 Reprint of the 1890 Edition. &nbsp;<em>The Sign of Four</em> is the second novel featuring Sherlock Holmes written by Sir Arthur Conan Doyle. &nbsp;Doyle would eventually write four novels and 56 short stories featuring the fictional detective.&nbsp; The story is set in 1888. The novel has a complex plot involving service in India the Indian Rebellion of 1857 a stolen treasure and a secret pact among four convicts (&quot;the Four&quot; of the title) and two corrupt prison guards. It presents the detective&#39;s drug habit and humanizes him in a way that had not been done in the preceding novel <em>A Study in Scarlet </em>(1887). It also introduces Doctor Watson&#39;s future wife Mary Morstan.&nbsp; It is an entangled story of greed and revenge in which Holmes and Watson accompany a beautiful young woman on a mission that leads to a horrific one-legged man in the dark heart of London.<br />A thrilling early introduction to Holmes and his methods.</p>