"It's tempting to say that Agatha Christie is a genius and let it go at that, but the world's had plenty of geniuses. Agatha Christie is something special."--Lawrence Block, New York Times bestselling authorIn this official edition featuring exclusive content from the Queen of Mystery, Agatha Christie's first Tommy and Tuppence mystery.Tommy and Tuppence, two people flat broke and out of work, are restless for excitement. They embark on a daring business scheme--Young Adventurers Ltd.--"willing to do anything, go anywhere." But their first assignment, for the sinister Mr. Whittington, draws them into a diabolical, political conspiracy. Under the eye of the elusive, ruthless Mr. Brown, they find themselves plunged into more danger than they ever imagined.One of mystery's most memorable sleuthing duos, Tommy and Tuppence lead readers down a harrowing maze of secrets, lies, and death in The Secret Adversary.