The Secret Adversary - Agatha Christie

Agatha Christie's first Tommy & Tuppence book is a thrill-packed novel of international intrigue, murder and suspense. Tommy and Tuppence, two young people short of money and restless for excitement, embark on a daring business scheme - Young Adventurers Ltd. Their advertisement says they are `willing to do anything, go anywhere'. But their first assignment, for the sinister Mr Whittington, plunges them into more danger than they ever imagined...