N or M?N or M? by Agatha Christie features Tommy & Tuppence, who 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 spies, Tommy and Tuppence Beresford. Their mission: to seek out a man and a woman from