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,
N or M? accident of typography that "nomina" came to be represented by "m". The novel is the first to feature the mature versions of her detectives Tommy and Tuppence, whose previous appearances had been in the adventure "The Secret Adversary" (1922) and the short story collection "Partners in Crime" (1929). After the outbreak of the Second World War and many years after they worked for British intelligence, middleaged Tommy and Tuppence Beresford feel useless and sidelined. Then Tommy is approached by a secret agent named Grant to go undercover once more. Grant tries to find German spies and fifth columnists but is