The aristocratic Charles Bromley arrives at 221B Baker Street to beg Sherlock Holmes for his help.
Then the diamond is stolen, and Holmes must try to unravel a mystery centuries in the making..
When a jeweller is found murdered, it seems as if the Moonstone deserves its reputation.
Bromley believes that his wife is in danger, as she has refused an offer to sell the Moonstone, a fabulous diamond that has been in her family for generations but which is said to be cursed.
The aristocratic Charles Bromley arrives at 221B Baker Street to beg Sherlock Holmes for his help