Helena Merriman tells the extraordinary true story of a man who dug a tunnel right under the feet of Berlin Wall border ...

Thirty years after the fall of the Berlin Wall, Helena Merriman tells the extraordinary true story of a man who dug a tunnel into the East, right under the feet of border guards, to help friends ...

For 28 years a 155km-long concrete wall snaked through the centre of Berlin, separating the Soviet-backed East from the capitalist West. Built in 1961 to stop residents from fleeing communist ...