THE AMBASSADOR is a powerful, thrilling drama set in a world of deception, mistrust and betrayal. Pauline Collins plays Ambassador Harriet Smith, who holds one of Britain's most coveted and powerful Embassy posts. John Stone, played by Denis Lawson, is Harriet's determined commercial attache and main aide. But Stone also answers to another master - MI6 (the British Intelligence Agency). The Ambassador's job as troubleshooter for Britain takes her into a sinister and dangerous world far removed from the cocktail parties of Downing Street.