Brainstorm!
One of Hammer Films' ventures into the psychological horror realm, Fear in the Night is more fun than frightening. Plot has Judy Geeson as a young woman recovering from a nervous breakdown who moves with her husband to a boys' school. Once there she appears to be once again terrorized by a man with an artificial arm, but nobody believes her.
Peter Cushing, Ralph Bates and Joan Collins also star, in what has to be a candidate for weakest of the Hammer psychological series of films. Things are not helped by it coming off as a cheap knock off of Hammer's own superlative "Taste of Fear 1961", a picture that firmly delivered on its promise. 
Fear in the Night starts off promisingly, with a genuinely scary set-up, and once Geeson and Bates arrive at the boys school it's ripe for chills and suggestion. Unfortunately, the premise of Geeson being menaced in what is essentially a four character piece quickly wears thin - with Cushing badly under used in the process.
Atmosphere is fine, director and co-writer Jimmy Sangster always had a good eye and ear for uneasy dread. While the small cast give it a good whirl to make the modest intentions shine brighter. But ultimately it's only a diversion piece that homages better films of its type instead of making its own mark. 5/10