Test pilot Bruce Barton (Duncan Parkin) is missing and his girlfriend, Susan Winter (Gloria Talbott) organizes a search party, sent out in the jungles of Mexico. The team of scientist Russ Bradford (James Craig), mining expert Martin "Marty" Melville (Lon Chaney Jr.) and pilot Lee Brand (Tom Drake) fly into an unknown territory. While searching the area, however, they uncover giant mutated earth animals such as giant snakes and lizards, behemoth bugs, oversized mammals.
More importantly, they encounter a mutated 50-ft tall, one-eyed human monster who became disfigured due to an exposure to radioactivity from massive radium deposits in the area. He kills Melville but appears to recognize the girl. When the cyclops tries to prevent the rest of the group from flying to safety, he is gravely wounded, and dies.
Who is Bruce Barton's Girlfriend?
Susan Winter