Production Executive: Jon Epstein
Story Consultant: Anthony Boucher
Assistant Director: Henry Kline
Writer: Larry Cohen and William Wood
Story: Larry Cohen
Director: Tom Gries

Thomas Morton Clay: Lew Ayres
Bob: Robert Webber
Joanna Clay: Julie Adams
Mr. Cowell: Leonard Nimoy  
General Brackman: Robert F. Simon
Chester: Morgan Jones

Thomas Clay is an elderly highly respected specialist working on a top secret weapon for the USA. He lives with his wife, Joanna, and often they are visited by Bob, who regularly stays overnight. Working late Tom does not spend much time with his wife, so she enjoys Bob's company. All the time Tom is under surveillance by security people watching him. One night Tom goes down to his office and discovers that his best friend, Bob, takes photos from his latest works - obviously spying for another country. 

Bob admits that he's selling this high priced information. He also convinces Tom that he cannot do anything. If he told someone, he would be seen as an accomplice. Tom approaches the window to call in the security waiting outside - but changes his mind. The situation would make look him to be part of the espionage. Though Mr. Cowell, the security guard, comes in to check whether everything is o.k., Tom confirms and backs Bob, who has told him that he will be leaving the next day, not before handing over the microfilm to Tom. 

The next day Tom has the film checked and gets reported that it is an empty film. When Joanna meets Bob, he invites her to come along. She agrees to meet him at the airport. At home Joanna tells Tom that she is leaving with Bob. He confesses that he does not want to loose her and promises to change his attitude. Joanna believes him and - relieved - decides to stay. To put things right Tom leaves with a revolver to stop Bob, knowing from his wife where he is to be found. 

He manages to leave unnoticed and soon the security people come in to find out where he's gone to. General Brackman and Mr. Cowell soon get the wanted information and race after them to the airport. There Tom has stopped Bob, but not the plane Bob's accomplice has just left with. The security speed after it, stop it and get all they want. Tom is called into Gen. Brackman's office the next day where his wife will accompany him to.