

18/02/1953
The Office of Scientific Investigations tracks down the source of increased magnetism and radioactivity in Los Angeles, and discovers that a man-made isotope is consuming available energy from nearby mass every few hours, doubling its size in the process. Although microscopic, it will soon become big enough to destroy Earth; and how to stop it is yet to be determined. The film's Deltatron special effects footage is taken from the 1934 German sci-fi film GOLD.

Richard Carlson
as Dr. Jeffrey Stewart

King Donovan
as Dr. Dan Forbes

Leo Britt
as Dr. Benton

Jean Byron
as Connie Stewart

Harry Ellerbe
as Dr. Allard

Frank Gerstle
as Col. Willis

John Vosper
as Capt. Dyer

Byron Foulger
as Mr. Simon

Leonard Mudie
as Howard Denker

Kathleen Freeman
as Nelly

William Benedict
as Albert

John Zaremba
as Chief Watson

Douglas Evans
as Pilot

Strother Martin
as Co-Pilot

Michael Fox
as Dr. Serny

Watson Downs
as Mayor

Lee Phelps
as City Engineer

Roy Engel
as Gen. Behan

John Dodsworth
as Dr. Carthwright

Charles Williams
as Cabbie

Michael Granger
as Kenneth Smith

Jarma Lewis
as Stewardess

Elizabeth Root
as Joy

Juney Ellis
as Spinster
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