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. 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. With pressure mounting, the intelligence service appoints two improbable spies, Tommy