Aliens from the constellation Hydra crash-land on the island of Sardinia. A prominent scientist, his daughter, several young technicians, and a pair of Oriental spies are taken hostage by the beings so they can use them to repair their spaceship's broken engine. With that done, they take off towards their home planet, taking the earthlings with them. However, the humans attempt to mutiny against their captors, inadvertently sending their tiny spaceship hurtling into the infinite beyond…

The calving of an Arctic iceberg releases a giant praying mantis, trapped in suspended animation since prehistoric times. It first attacks military outposts to eat their occupants, then makes its way to the warmer latitudes of Washington and New York. A paleontologist works together with military units to try to kill it.

Although the DEI (Dave Elman Induction) was first used in teaching medical hypnosis in 1949, it originated in 1912. Dave Elman, then age 12, began using it on his classmates after experimenting with other methods for a few years. The DEI became the foundation of Elman's advanced methods taught to over 10,000 physicians and dentists.

When US radar installations in Greece are jammed and an undercover NATO security man is killed, suspicion falls on his widow, who sets out to find the real culprits and prove herself innocent.