Dr. Dahlgren tells Lois that the stolen atomic beam machine requires special fuel cylinders without which it is useless. Dr. Dahlgren is safely keeping the cylinders, but there may be a traitor in his household.

Producer:	Frank Chase
Writer:	George Ludlum
Superman / Clark Kent:	Clayton "Bud" Collyer
Lois Lane:	Rollie Bester
Dr. Dahlgren:	Ned Weaver