Dr. Cyclops: A brilliant but deranged physicist shrinks his enemies to one-fifth of their normal size when they begin to challenge his unconventional experiments.Cult of the cobra: Vengeance is sworn against six American GI's after they witness a clandestine ceremony worshiping beautiful women who can change into serpents.The land unknown: When a navy expedition crash-lands in a crater thousands of miles below sea level, they encounter a hot, tropical landscape of prehistoric terror filled with ferocious dinosaurs.The deadly mantis: A paleontologist teams up with the military to battle a huge praying mantis when it goes on the attack in metropolitan cities after being released from an Arctic iceberg.The leech woman: Determined to recapture her beauty, a woman discovers a compound that will restore youth - but only when it's combined with fluid taken from bodies of the newly dead.