An intelligent pulse of electricity is moving from house to house. It terrorizes the occupants by taking control of the appliances, either killing them or causing them to wreck the house in an effort to destroy it. Then it travels along the power lines to the next house, and the terror restarts. Having thus wrecked one household in a quiet neighbourhood, the pulse finds itself in the home of a boy’s divorced father whom he is visiting. It gradually takes control of everything, badly injures the stepmother, and traps father and son, who must fight their way out.

An astronaut exposed to cosmic rays outside of Saturn’s rings returns to Earth and begins to melt away. Escaping from the hospital, he wanders around the backwoods looking for human flesh to eat.

The Man from Bitter Ridge is a film directed by Jack Arnold. Jeff Carr, a special investigator, arrives in Tomahawk. His assignment is to discover who has been holding up the local stagecoach and is guilty for a series of killings that terrorize the town. Sheepman Alec Black is suspected by the local population but it is not long before Jeff realizes the man is innocent. Alec even becomes a good friend although he is in love with the same woman as him, Holly. Jeff will manage to arrest the real culprits but not before the latter try to compromise him down.