Stalwart Universal contractees Don Porter and Brenda Joyce are afforded rare starring roles in Danger Woman. Porter plays scientist Claude Ruppert, who hopes to harness atomic energy for commercial purposes. Ruppert is in love with secretary June (Brenda Joyce), but is forced to end the relationship when his long-missing wife Eve (Patricia Morrison) makes a return appearance. Eve is in cahoots with a criminal cartel, intending to steal her husband's atomic secrets for an unnamed foreign power. But before one can say "Julius and Ethel Rosenberg", the villains are foiled by cunning Claude and dainty June. ~ Hal Erickson, Rovi