Spies hold the son of a nuclear physicist (Gene Barry) hostage in exchange for the Los Alamos bomb formula.

Top Cast

Gene BarryDr. Frank Addison

Lydia ClarkeMartha Addison

Michael MooreRuss Farley

Nancy GatesEllen Haskell

Lee AakerTommy Addison

Milburn StoneInsp. Harold Mann

Bert FreedEmil Jablons

Frank CadyF.B.I. Agent George Weinberg