THE STRANGE WORLD OF PLANET X 1958 (The Cosmic Monsters) in COLOR Experiments Create Giant Mutations

THE STRANGE WORLD OF PLANET X 1958 (aka The Cosmic Monsters in the USA) - A rural British lab uses a device to create intense magnetic fields. This brings a friendly visitor from space warning against such experiments with the Earth's magnetic field as this could create mutations. One night, after a lightning storm effects the device, strange and deadly things start happening in the nearby forest.