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
as Sandy Mueller
Horst Buchholz
as Emerich Weber
José Ferrer
as Martin Komansky
Ute Christensen
as Ilse Morrell
Jacques Breuer
as Joachim Lentz
Nicholas Farrell
as Georg Heptner
Kenneth Griffith
as Bruno Balderbach
Robert Freitag
as Dr. Lentz
Gerald W. Abrams
as Phil
Ilse Bahrs
as Butcher Customer
Pasqual Breuer
as Wolf Lentz
Carl Duering
as Klaus Schoenemann
