The Moonstone by Wilkie Collins — Read

(In a letter to Mr. Bruff)

Have you any recollection, my dear sir, of a semi-savage person whom you met out at dinner, in London, in the autumn of 'forty-eight? Permit me to remind you that the person's name was Murthwaite, and that you and he had a long conversation together after dinner. The talk related to an Indian Diamond, called the Moonstone, and to a conspiracy then in existence to get possession of the gem.