Peter Graves

Agent / Tom Kaylor

Mala Powers

Valerie 'Val' Owens

Chuck Connors

Mink Reynolds

Merry Anders

Amy 'Miss Diesel of 1958' Phillips

Robert B. Williams

'Dunc' Clayton

Harry Lauter

Steve Hummel / Mr. Brown

Claire Carleton

Mabel (uncredited)

John Dierkes

Kathy Marlowe

Paul Maxwell

Doctor (uncredited)

John Mitchum

Handler (uncredited)

Robert Shayne

Frank Ainsley (uncredited)

Fred Sherman

Howard (uncredited)