The turncoat is young Peter Thornton, a defector to the Chinese during the Korean War. Now, with forged credentials, he's en route to a missile plant to do the job of espionage he was groomed for.

Troublemaking is his past time, as police close in on his hoaxes.

Agent Don Owens goes undercover in a counterfeit operation to find a killer. One of the services performed by BOSS is to help behind the Iron Curtain, but the service hasn?t been too good of late: Four defecting seamen have been found murdered, and two BOSS agents have been lost while investigating the crimes. Agent Don Ownes? assignment: Infiltrate the waterfront and find out who is behind the murders.

Frank G. Wheatley is a British spy who is investigating the past of Lydia Constantine, the widow of a secret agent. Constantine is suspected of selling Cold War secrets to the Communists. To ascertain the truth, it is necessary to ""rebuild"" Constantine and send his living counterpart behind the Iron Curtain.

A man who dies on an operating table is brought back to life, but he has no memory of anything that happened before he wakes up. A government agent decides that he would make a perfect undercover operative.

A singer gets caught up in a romantic triangle.