In the last in the present series of the investigative history series, Mike Thomson returns to the mid-1960s to pore over the Prime Minister's private paperwork. He turns up evidence that Harold Wilson deceived parliament and the country over sanctions to former Rhodesia and that the then Foreign Secretary, Denis Healey, was forced to act on reports that elements in the British military were so angry they were planning a coup. Includes interviews with Denis Healey, Ian Smith, David Owen and Sir Michael Palliser, Wilson's private secretary.