Based on a hit podcast series, this book tells the unbelievable true story of an escape tunnel under the Berlin Wall—the people who built it, the spy who betrayed it, and the media event it inspired.

In September 1961, at the height of the Cold War, 22-year-old Joachim Rudolph escaped from East Germany, one of the world's most brutal regimes. He'd risked everything to do it. Then, a few months later, working with a group of students, he picked up a spade... and tunneled back in.
The goal was to tunnel into the East to help people escape. They spend months digging, hauling up carts of dirt in a tunnel ventilated by stove pipes. But the odds are against them: a Stasi agent infiltrates their group and on their first attempt, and dozens of escapees and some of the diggers are arrested and imprisoned. Despite the risk of prison and death, a month later, Joachim and the other try again and hit more bad luck: the tunnel springs a leak. After several...