A Gambian spymaster, a Czechoslovak secret agent and a South African ghost called Sam. Correspondents share wit, analysis, and tales of strange encounters. Introduced by Kate Adie.

Gambia’s intelligence agency has a new name and its boss is busy rebranding it – but beyond repainting the torture chamber, what does that mean, wonders Colin Freeman. Rob Cameron scours the archives of the StB – Czechoslovakia’s communist-era secret police– on the trail of ‘agent COB’. He meets the man who says he tried to recruit Jeremy Corbyn as an asset. Helen Nianais has coffee with a former jihadi who faces three years in jail after spending nine days in Syria. Now he’s trying to counter extremist propaganda online and help others reintegrate back into normal life in Kosovo.