Atomic scientist/pilot Doug Martin is missing after his plane crashes on an reconnaissance mission after a nuclear test. Miraculously appearing unhurt at the base later, he is given sodium amethol, but authorities are skeptical of his story that he was captured by aliens determined to conquer the Earth with giant monsters and insects. Martin vows to use existing technology to destroy them.

• Planet Filmplays
• Peter Graves
• Barbara Bestar
• James Seay
• Frank Gerstle
• Shepard Menken
• Steve Pendleton
• John Frederick
• Jack Daly