
"FBI teams up with Scotland Yard to avenge murder of G-Man!"
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?
Philip 'Scotty' Grayson

Daniel F. O'Hara

Dr. Anastasia 'Toni' Neva

Dr. Ritter von Stolb

Igor Braun

Krebs

Dr. Frederick Townsend

Dr. William Forrest

Anton Radchek

Dr. Homer Allen

Carl Bemish

Narrator (voice)

Police Sergeant

FBI Chemist

Voice on Tape Recorder

Mr. North

Mrs. Ecko, the Landlady

FBI Agent Miller

Adolph Mizner

Police Detective Gaines

Feodore

FBI Agent Alison

FBI Agent Thompson

G.W. Hunter

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