Someday, someone should write a book examining why TV movies of the late 60s and early 70s were often preoccupied with witchcraft and horror at a time when the cinema shied away from the subjects, except for B movies and the rare blockbuster ala "Rosemary's Baby." Even some of the sillier ones ("Satan's School for Girls" anyone?) worked up some genuine chills. But "Crowhaven Farm" has to be the best. From the opening scenes right through the surprising (and terrifying) climax, this little thriller puts "The Exorcist" and other, later, big-budget chillers to shame. It may have been the TV movie's lack of pretentiousness that worked to its advantage. Made quickly and economically, "Crowhaven Farm" had no time for high-fallutin' symbolic nonsense. It did what it set out to do - inspire nightmares - and did it very well.