
The Daily Clarion hires detective story writer Steve Colt to investigate the deaths of a group of scientists working on an atomic rocket development project. Behind the killings is fortune teller Sombra, a spy from an Asian country intent on world domination, who is determined to pilfer the atomic rocket by luring workers from the project to her parlor and killing them with black widow spider venom when they refuse to cooperate.

as Steve Colt

as Joyce Winters (as Virginia Lindley)

as Sombra, The Black Widow

as Nick Ward

as Ruth Dayton

as Dr. Z.V. Jaffa

as Porter-Spy

as Hitomu

as Dr. Ann Curry

as John M. Walker

as Prof. Henry Weston

as Dr. Godfrey

as Bradley

as Blinky

as Michael Burns

as J. Carter

as A. Kabob

as Spike

as Slade

as Finnegan

as Burke

as District Attorney Mark

as Filmore Hagen

as Dr. Harcourt

as Mendoza