Titles in this Set:

1. The Secret Adversary
2. Partners in Crime
3. N or M?
4. By the Pricking of My Thumbs
5. Postern of Fate

Description:

The Secret Adversary
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

Partners in Crime
Tommy and Tuppence Beresford were restless for adventure, so when they were asked to take over Blunts International Detective Agency, they leapt at the chance.

After their triumphant recovery of a pink pearl, intriguing cases kept on coming their way: a stabbing on Sunningdale golf course; cryptic messages in the personal columns