Tommy and Tuppence Beresford mysteries

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..

Set during the dark days of World War II, Agatha Christie's N or M? puts two most unlikely espionage agents, Tommy and Tuppence Beresford, on the trail of a pair of Nazi spies who have murdered Britain's top agent. World War II is raging, and while the RAF struggles to keep the Luftwaffe at bay, Britain faces a sinister threat from "the enemy within"-Nazis posing as ordinary citizens. With pressure mounting, the intelligence service appoints two improbable...

"Tommy and Tuppence Beresford have just become the proud owners of an old house in an English village. Along with the property, they have inherited some worthless bric-a-brac, including a collection of antique books. While rustling through a copy of The Black Arrow, Tuppence comes upon a series of apparently random underlinings. However, when she writes down the letters, they spell out a very disturbing message: "Mary Jordan did not die naturally."...