N or M?A print on demand edition of Christie's masterpiece especially for readers who prefer the old pocket sized 'A format' paperbacks. Tommy & Tuppence are hired to track down wartime spies at a seaside resort It is World War II, and while the RAF struggles to keep the Luftwaffe at bay, Britain faces an even more sinister threat from the enemy within Nazis posing as ordinary citizens. With pressure mounting, the Intelligence service appoints two unlikely