The Sign of the Four: A missing father, a cursed treasure, and the brilliant Sherlock Holmes. Dive into the Detective Fiction classic that redefined the ultimate murder mystery and deduction thriller.

A missing father, a mysterious benefactor sending perfect pearls, and a stolen Indian treasure dripping with a deadly curse.

Ten years ago, Mary Morstan's father vanished without a trace in the heart of London. Since then, she has received a rare, lustrous pearl in the mail on the exact same date every year. Now, a cryptic letter summons her to a midnight rendezvous at the Lyceum Theatre, promising long-awaited justice. With nowhere else to turn, Mary enlists the help of the brilliant Sherlo...