A security leak is found at a Southern California atomic plant. The authorities stand in fear that the information leaked would go to a hostile nation. To investigate the case more efficiently, Dan O'Hara, an FBI agent, and Philip Grayson, a Scotland Yard sleuth, join forces. Will they manage to stop the spy ring from achieving their aim?
as Philip 'Scotty' Grayson
as Daniel F. O'Hara
as Dr. Anastasia 'Toni' Neva
as Dr. Ritter von Stolb
as Igor Braun
as Krebs
as Dr. Frederick Townsend
as Dr. William Forrest
as Anton Radchek
as Dr. Homer Allen
as Carl Bemish
as Narrator (voice)
as Police Sergeant
as FBI Chemist
as Voice on Tape Recorder
as Mr. North
as Mrs. Ecko, the Landlady
as FBI Agent Miller
as Adolph Mizner
as Police Detective Gaines
as Feodore
as FBI Agent Alison
as FBI Agent Thompson
as G.W. Hunter
