The Stranger Within (1974)

Plot

Ann Collins faces a puzzling mystery: who is the father of her unborn child? After her husband underwent a vasectomy and she has had no other partners, the situation becomes increasingly bizarre. As her pregnancy progresses, Ann experiences unusual symptoms, such as strange cravings, a drastic drop in home temperature, and an obsession with reading complex academic texts. The tension escalates as chilling revelations loom on the horizon. Starring Barbara Eden, this captivating horror-sci-fi hybrid from Richard Matheson, known for his groundbreaking works like I AM LEGEND and influential TWILIGHT ZONE episodes, keeps viewers on the edge of their seats.