Amalgamated Productions

A scientist's thoughts materialize as an army of invisible brain-shaped monsters (complete with spinal-cord tails!) who terrorize an American military base in this nightmarish chiller.

Dr. Thomas Bolton fights for the use of anesthetic in surgery and uses himself as a guinea pig, but soon finds himself addicted.

A researcher investigating a notorious serial killer who was hanged 20 years earlier seemingly becomes possessed by the long-dead strangler.

The first pilot to leave Earth's atmosphere lands, then vanishes; but something with a craving for blood prowls the countryside...