Stock car racer Tommy Callahan is forced to join Pete Madsen’s thrill circus after his blackouts cause a fatal accident that gets him thrown off the circuit.

College whiz-kid Merlin Jones concocts a method for teaching advanced information to a chimpanzee, then creates a flying machine of his own design, ultimately raising havoc on the campus.

When he’s stationed in Tahiti, a sailor hires a witch doctor to keep an eye on his girlfriend.

A Martian teenager sent to prepare for an invasion falls in love with an Earth girl.

Merlin Jones, a precocious and intelligent high-school boy, experiments with hypnosis and creates a mind-reading machine. However, his experiments land him in deep trouble with the law.

Through an ancient spell, a boy changes into a sheepdog and back again. It seems to happen at inopportune times and the spell can only be broken by an act…