When the CIA discovers one of its agents leaked information that cost more than 100 people their lives, veteran operative Henry Pelham is assigned to root out the mole with his former lover and colleague Celia Harrison.

The latest in British documentary filmmaker Phil Grabsky's In Search Of series, looking at the life of Polish pianist and composer: Frédéric François Chopin, whose grave in Paris remains a place of pilgrimage and whose music continues to sell out concert halls worldwide.