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
