The film depicts the experiences of a small group of people invited by a paranormal investigator to investigate a purportedly haunted house
Screenwriter Gidding, who had worked with director Wise on the 1958 film I Want to Live!, began a six-month write of the script after reading the book, which Wise had given to him
He perceived the book to be more about mental breakdown than ghosts, and although he was informed after meeting author Shirley Jackson that it was very much a supernatural novel, elements of mental breakdown were introduced into the film
The film was shot at the MGM-British Studios near London, UK on a budget of US$1.05 million, with exteriors and the grounds shot at Ettington Park (now the Ettington Park Hotel) in the village of Ettington, Warwickshire