Stranger in Our House

Stranger in Our House also released as Summer of Fear is a 1978 madefortelevision horror film directed by Wes Craven and starring Linda Blair. It tells the story of a teenage girl who begins to suspect that her cousin may be a practitioner of black magic and witchcraft after she comes to live with their family. The film is based on the book Summer of Fear by Lois Duncan.

One day, Rachels horse Sundance attacks Julia and tries to trample her. Julia recovers and begins insinuating herself into the family. Rachels brother and dad seem particularly taken with the fetching young lady in their midst. Odd things begin to happen. After having earlier found a human tooth among Julias belongings, Rachel discovers a photo of herself missing...and her face breaks out in blotchy hives. She also begins to notice that Julia doesnt always have a reflection in the mirror. The hives render Rachel unable to attend a dance. Julia accompanies Rachels boyfriend Mike Jeff McCracken instead, borrowing a dress that Rachel had made for herself an arrangement that Rachel should never have agreed to because Mike becomes smitten with Julia and they begin dating. To make matters worse, the cousin also forges a close friendship with Carolyn Fran Drescher, Rachels best friend. The next day, Rachel enters into a competition with Sundance, where the horse flips out, breaking its leg in the process and forcing a vet to put it to sleep.To her surprise, Rachel finds things in Julia dresser drawers that point to something sinister burned hair from her fallen horse and her missing photo covered in red paint spots. She speaks to Professor Jarvis Macdonald Carey who tells her it may indeed be the work of someone who practices black magic. Before she can show him the evidence however, the professor collapses and is rushed to the hospital. A letter that Julia receives from a friend gets the best of Rachels curiosity. Rachel phones the friend in Boston and discovers that Julia supposedly sings in her schools glee club. Knowing that the person living in her house doesnt have any interest in music, Rachel further suspects something is not right. Immersing herself in books on the occult, Rachel starts to believe Julia is a witch. During a visit to the professor at the hospital, he tells her that witches do not show up in photographs. A camera is a machine and machines cannot b

Source: Wikipedia