The Secret Adversary is a work of detective fiction by Agatha Christie first published in the United Kingdom by The Bodley Head in January 1922 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. It is her second published novel. 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. (Wikipedia)
Hardly able to contain his excitement, Tommy hurried down the stairs. Tuppence was waiting at the angle of the turn.
“Yes. Oh, Tommy!”
Tommy squeezed her arm sympathetically.
“I know, old thing. I feel the same.”
“It’s—it’s so lovely to think of things—and then for them really to happen!” cried Tuppence enthusiastically.
Her hand was still in Tommy’s. They had reached the entrance hall. There were footsteps on the stairs above them, and voices.
Suddenly, to Tommy’s complete surprise, Tuppence dragged him into the little space by the side of the lift where the shadow was deepest.
Two men came down the stairs and passed out through the entrance. Tuppence’s hand closed tighter on Tommy’s arm.
“Quick—follow them. I daren’t. He might recognize me. I don’t know who the other man is, but the bigger of the two was Whittington.”