You can still listen to BBC iPlayer Radio via your browser by visiting bbc.co.uk/radio
4/4 With Dunning entombed alive and Lionheart en route to Germany, can the duo save the world?
BBC Radio 4 Extra
3/4 MI-13's Lionheart and Dunning head for Egypt to uncover the secret of the lost tombs.
2/4 MI-13's Lionheart and Dunning search for Sir Basil in the Scottish Highlands.
1/4 Lionheart and Dunning investigate a mysterious outbreak of the Black Death in 1930s London