High Quality Content by WIKIPEDIA articles! Inseminoid (titled Horror Planet in the United States) is a British film of science fiction and horror released in 1981. Norman J. Warren`s eighth motion picture, the plot of Inseminoid concerns a group of future scientists excavating the ruins of an ancient civilisation on a distant planet. When a monstrous alien creature attacks and inseminates one of the women in the team, chaos ensues as the unbalanced victim, possessing unnatural strength, murders her colleagues one after another in a psychotic bid to protect her unborn twin hybrid offspring.