Catherine: A Story was the first full-length work of fiction produced by William Makepeace Thackeray. It first appeared in serialized installments in Fraser's Magazine between May 1839 and February 1840. Thackeray's original intention in writing it was to criticize the Newgate school of crime fiction, exemplified by Bulwer-Lytton and Harrison Ainsworth, whose works Thackeray felt glorified criminals. Thackeray even criticized Dickens for this failing for his portrayal of the good-hearted streetwalker Nancy and the charming pickpocket, the Artful Dodger, in Oliver Twist. The appearance of the first installments of Ainsworth's novel Jack Sheppard at the beginning of 1839 seems to have been what spurred Thackeray into action.