Starring the award-winning Simon Russell Beale as George Smiley, and with a distinguished cast including Ian McDiarmid and Philip Jackson, this compelling dramatization perfectly captures the atmosphere of le Carré’s chilling novel of deception and betrayal. When word reaches The Department – an ailing section of British military intelligence – that Soviet missiles are being installed close to the West German border, it seems the perfect opportunity to show Control and Smiley, their rivals over at the Circus, that The Department still has value.