All eight episodes from the sixth season of the cult 1960s action series starring Patrick MacNee as top-level secret agent John Steed and Diana Rigg as martial arts expert Mrs Emma Peel. Episodes are: 'Return of the Cybernauts', 'Death's Door', 'The 50,000-Pound Breakfast', 'Dead Man's Treasure', 'You Have Just Been Murdered', 'The Positive Negative Man', 'Murdersville' and 'Mission... Highly Improbable'.