A space capsule is shot into orbit to investigate some mysterious satellites. Suddenly, communications are lost and the ship crash lands in a field. Astronaut Frank Douglas is missing and the helicopter pilot who discovered the accident is found dead, his body shrivelled and distorted. Soon other victims are found, all "cooked to death" in the same gruesome fashion. Has Douglas metamorphosed into the enormous, scarred creature (Henry Hite) responsible for the killings? Government scientist Dr. Logan begins secretly treating the monster with an experimental antidote which helps quiet its homicidal tendencies for a while, until the creature destroys the laboratory and heads out to the countryside once more. The army is called out to assist in the giant's capture and the public is alerted to the existence of a radioactive monster stomping through the area. Clad in protective gear and hot on the trail, the soldiers suddenly realize that, inexplicably, the monster appears to have vanished into thin air. A telegram arrives with the news that Frank Douglas has been found alive and well in a lifeboat 8,000 miles away and the case is closed.
by Fred Beldin synopsis