This app will stop working on 3rd April 2017. But you can still listen to BBC iPlayer Radio via your browser by visiting bbc.co.uk/radio
Using new documents, Mike Thomson investigates a largely forgotten massacre in India.
Mike Thomson explores a document pointing at American treachery prior to Pearl Harbour.
Mike Thomson examines documents revealing British brutality in Kenya in the 1950s.
Did the 1916 Dublin Rising catch the cabinet by surprise? Author Nick Rankin investigates.
Jeremy Duns examines links between MI6 and the British media during the Cold War.
Mike Thomson investigates the role of the BBC Hungarian Service in World War II.
Mike Thomson discovers how close Britain's greatest cold war secret was to being exposed.
Mike Thomson returns with the investigative history series, starting in Dublin in 1922.
Why were the British Chiefs of Staff in secret contact with enemy Vichy France in 1942?
Mike Thomson unearths the motives behind the 1949 murder of a British colonial governor.