World-famous scientist Michael Armstrong (Paul Newman) and his fiancee/assistant, Sarah Sherman (Julie Andrews), travel to Copenhagen for a physics conference. When Sarah mistakenly intercepts a message meant for Armstrong, she believes that he is secretly defecting to East Germany. Or is he? As Armstrong goes undercover to glean top-secret information, the couple find themselves running for their lives from enemy agents in this action-packed thriller. © 1966 Universal Studios. All Rights Reserved.