Volcanic activity frees giant scorpions from the earth who wreak havoc in the rural countryside and eventually threaten Mexico City.

Giant mollusk monsters attack California.

Global panic ensues when it is revealed that a mysterious UFO is actually a giant bird that flies at supersonic speed and has no regard for life or architecture.

The first U.S. spaceship to Venus crash-lands off the coast of Sicily on its return trip. A dangerous, lizard-like creature comes with it and quickly grows gigantic.

Marine atomic tests cause changes in the ocean's ecosystem resulting in dangerous blobs of radiation and the resurrection of a dormant dinosaur that threatens London.

Rocks from a meteor which grow when in contact with water threaten a sleepy Southwestern desert community.

A spider escapes from an isolated desert laboratory experimenting in giantism and grows to tremendous size as it wreaks havoc on the local inhabitants.

A giant, radioactive octopus rises from the Philippine Trench to terrorize the North American Pacific Coast.

The blood of a primitive fish exposed to gamma rays causes a benign research professor to regress to an ape-like, bloodthirsty prehistoric hominid.

American G.I.s who trespass on a Hindu ceremony are hunted down by a beautiful woman who has the power to transform herself into a cobra.

Men capture the creature from the Black Lagoon and make him an aquarium attraction, from which he escapes.

A party of archaeologists discovers the remnants of a mutant five-millennia-old Sumerian civilization living beneath a glacier atop a mountain in Mesopotamia.