The Moonstone, a priceless Indian diamond which had been brought to England as spoils of war, is given to Rachel Verrinder on her eighteenth birthday. That very night, the stone is stolen. Suspicion then falls on a hunchbacked housemaid, on Rachel's cousin Franklin Blake, on a troupe of mysterious Indian jugglers, and on Rachel herself.
Artist Alexander Kinloch has worked out a good pattern for his life. His home is a small bothy on a remote mountain in Scotland; he paints on commission, from which he derives both pleasure and a decent income; he lives alone and likes it. One day, however, Alexander's peace is violently shattered when he returns home to find a group of strangers waiting for him. After a scuffle, he is left for dead with only...