N or M?

Set during World War II, Agatha Christie's N or M? follows the unexpected espionage efforts of Tommy and Tuppence Beresford as they investigate Nazi spies operating within Britain. Tasked with uncovering a dangerous enemy hiding among hotel guests, they navigate a tense and uncertain environment where trust is scarce and the stakes are high. Narrated by Hugh Fraser, the story offers a compelling blend of suspense and intrigue amid wartime chaos.