After an unauthorized letter suggesting U.S. support for a Russian attack on China is sent to Moscow, a former naval officer and his team go undercover to retrieve it. Their plans are disrupted when a cunning politician raids their hideout.

• 20th Century Fox
• Bibi Andersson
• Richard Boone
• Nigel Green
• Dean Jagger
• Lila Kedrova
• Micheál Mac Liammóir
• Patrick O'Neal
• Barbara Parkins