During the Cold War, an American scientist appears to defect to East Germany as part of a cloak and dagger mission to find the formula for a resin solution, but the plan goes awry when his fiancee, unaware of his motivation, follows him across the border.

• Alfred J. Hitchcock Productions
• Universal Pictures
• Paul Newman
• Julie Andrews
• Lila Kedrova
• Hansjörg Felmy
• Tamara Toumanova
• Ludwig Donath
• Wolfgang Kieling
• Günter Strack