A mysterious young woman, Miss Mary Morstan, seeks the expertise of Sherlock Holmes to unravel the disappearance of her father, Captain Morstan, 10 years prior. The case takes a fascinating turn as Holmes and Watson become entangled in a complex web of deceit surrounding a long-lost treasure on the Andaman Islands, once belonging to four notorious convicts.

The Sign of Four
A mysterious case unfolds when a young woman's father vanishes, only to have a series of cryptic messages and rare pearls arrive years later, prompting Sherlock Holmes to unravel the tangled threads of the enigma.