The Sign of Four

by Arthur Conan Doyle

Sherlock Holmes and Dr. Watson investigate a baffling treasure case that stretches from London opium dens to imperial secrets, coded messages, and violent revenge.

At a glance

  • The Sign of Four is the second Sherlock Holmes novel and one of Arthur Conan Doyle’s…
  • A visit from Mary Morstan leads Holmes and Watson into a case involving a vanished…
  • Themes The novel combines brisk detective plotting with questions of loyalty, greed…
  • Holmes’s methodical intelligence is matched by Watson’s emotional and moral perspective…

The novel combines brisk detective plotting with questions of loyalty, greed, colonial violence, and the limits of official respectability.

The Sign of Four

 View product