Seymour Friedman and Peter Graham Scott direct this 1950s spy drama starring George Raft and Sally Gray. With a number of top scientists from the West disappearing behind the Iron Curtain courtesy of a smuggling ring, the British and US governments decide that it is time to do something about it. Undercover FBI agent Steve Rossi (Raft) is duly teamed up with MI5 Agent Joan Miller (Gray) to track down the leaders of the ring. With contrasting backgrounds and methods, will Rossi and Miller be able to work together? Moreover, can they trust each other?