N or M?

<p>Set during World War II Agatha Christie s riveting novel in her Tommy and Tuppence series follows the unlikely espionage agents as they pursue a pair of Nazi spies who have murdered Britain s top agent now a movie on both Acorn TV and PBS.<p>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.<p>With pressure mounting the intelligence service appoints two improbable spies Tommy and Tuppence Beresford. Their mission: to seek out a man and a woman from among the colorful guests at Sans Souci a seaside hotel. But this assignment is far from an easy stroll along the promenade N and M have just murdered Britain's finest agent and no one can be trusted.