Tommy and Tuppence are two fictional detectives, recurring characters in the work of Agatha Christie. Their full names are Thomas Beresford and Prudence Beresford (née Cowley). The first time Tommy and Tuppence appeared in a Christie novel was in The Secret Adversary (1922). They started out their career as accidental blackmailers (all in search of adventure and money), but the detecting life soon proved more profitable and much more exciting.