The Secret Adversary is a short and nice work of fiction. First published in the UK in 1922. While in the USA it also published later in the same year. Before that, in 1921 it had appeared in “The Times” in 17 weekly episodes. It was the 2nd detective novel by the all time best selling author Agatha Christie. In this novel Christie introduced the characters of Tommy and Tuppence. These characters were also featured in her 3 more novels as well as in a short story collection. All these novels which featured Tommy and Tuppence span the Christie’s literary career.