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.
Richard Thomas
Sandy Mueller
Horst Buchholz
Emerich Weber
José Ferrer
Martin Komansky
Ute Christensen
Ilse Morrell
Jacques Breuer
Joachim Lentz
Nicholas Farrell
Georg Heptner
Kenneth Griffith
Bruno Balderbach
Robert Freitag
Dr. Lentz
