N or M? is almost a direct link on from 'The Secret Adversary', except in the Second, rather than the First World War. No matter - the setting is perfect and the characters drawn in wonderful Christie style. Also, unlike the later two novels (By the Pricking of my Thumbs and Postern of Fate), there is actually a mystery to solve and enough clues to get it.

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This is the final Tommy & Tuppence novel. 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: M a r y - J o r d a n - d i d - n o t - d i e - n a t u r a l l y!

Narrated by Bill Wallis.

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