The Secret Adversary The Secret Adversary The Secret Adversary is the second published detective fiction novel by British writer Agatha Christie, first published in January 1922 in the United Kingdom by The Bodley Head and in the United States by Dodd, Mead and Company later in that same year. The UK edition retailed at seven shillings and sixpence (7/6) and the US edition at $1.75. The book introduces the characters of Tommy and Tuppence who feature in three other Christie novels and one collection of short stories; the five Tommy and Tuppence books span Agatha Christie's writing career. The Great War is over,
Tommy and Tuppence this first book "The Secret Adversary" that they meet up after the war, and come to realise that, although they have been friends for most of their lives, they have now fallen in love with each other. Unlike many other recurring detective characters, including the better known Christie detectives, Tommy and Tuppence aged in time with the real world, being in their early twenties in "The Secret Adversary" and in their seventies in "Postern of Fate". In their early appearances, they are portrayed as typical young people of the 1920s, and the stories and settings have a more pronounced period-specific