THE STASI: SECRETS, LIES & BRITISH SPIES

10.15PM, ITV1 ★★★

East Germany’s formidable state security service, which once counted then KGB officer Vladimir Putin (right) as a liaison between the agencies, operated for 40 years until the fall of the Berlin Wall. This documentary exposes some of the Stasi’s stings in Britain, which have only recently become public knowledge. Historians, former M15 officers and victims reflect on the Stasi’s legacy and the lessons we can learn from its spying methods.