In Berlin in 1961, an American soldier and a German engineer join forces to build a tunnel under the Berlin Wall in order to smuggle out refugees, including the soldier's East German girlfriend.
Cast: Richard Thomas, Horst Buchholz, José Ferrer, Ute Christensen, Jacques Breuer, Nicholas Farrell, Kenneth Griffith, Robert Freitag, Gerald W. Abrams, Ilse Bahrs
