The Horns of Nimon

"The Horns of Nimon" is a classic serialized story from the British TV series Doctor Who, part of the Fourth Doctor's adventures. In the story, a mysterious, alien spacecraft crashes on a planet, and the Doctor uncovers a plot involving a malevolent being called the Nimon—an alien parasite that feeds off its hosts' energy. The Nimon appears as a large, horned creature, using a complex machine to control and manipulate others for its survival. The story explores themes of power, deception, and the fight to prevent a destructive extraterrestrial influence from spreading.