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.

• Cypress Point Productions
• Filmways Television
• Richard Thomas
• Horst Buchholz
• José Ferrer
• Ute Christensen
• Jacques Breuer
• Nicholas Farrell
• Kenneth Griffith
• Robert Freitag