Wealthy and widowed, Lizzie Eustace comes into possession of a very valuable heirloom necklace, the Eustace Diamonds. But Lizzie also possesses a penchant for lying. When the strongbox in which the diamonds are usually kept is stolen, Lizzie becomes the subject of much gossip and scandal. Eventually, a mystery is unravelled and the police discover much more than they initially expected. The truth is not always what it appears to be. First published in 1872, The Eustace Diamonds is the third in Trollope's "Palliser" series.