A broad is slowly stalked to the margin of madness by a man watching her from the inconsistent tower blot out. Her attempts to get the police to infer her candidly leaves her with no option but to record lose him down herself.
This is often referred to as "the lost Carpenter film", a very good thriller about a woman who is being stalked, the idea for this storyline has been re-made several times since, I really enjoyed it and rate it a 4+/5.