Spies hold the son of a nuclear physicist (Gene Barry) hostage in exchange for the Los Alamos bomb formula.
Gene Barry
Dr. Frank Addison
Lydia Clarke
Martha Addison
Michael Moore
Russ Farley
Nancy Gates
Ellen Haskell
Lee Aaker
Tommy Addison
Milburn Stone
Insp. Harold Mann
Bert Freed
Emil Jablons
Frank Cady
F.B.I. Agent George Weinberg
