Spies Beneath Berlin written by David Stafford performed by Peter Wickham on CD (Unabridged)

This book is a must for anyone who is interested in the world of Cold War espionage. It tells the story of how the American Central Intelligence Agency (CIA) and the British Secret Intelligence Service (SIS, or MI6) organised the digging of a tunnel under the border between West and East Berlin.

This allowed them to tap into underground telephone and telegraph cables used by the Russians.