The Boy Who Cried Werewolf [1973] [DVD]

From imdb ~ Robert Bridgestone (Kerwin Mathews) has divorced his wife Sandy Bridgestone (Elaine Devry) and travels with his son Richie Bridgestone (Scott Sealey) to an isolated cabin to spend a couple of days together. While walking during the night, Robert is attacked and bitten by a werewolf. Robert fights and kills him in self-defense and he turns into a man again. Richie claims to the Sheriff (Robert J. Wilke) and to his father that the man was a werewolf but nobody believes in the boy. His psychologist thinks it may be a trauma and Sandy decides to travel back to the cabin with Robert and Richie in the full moon. When a werewolf attacks the locals, the Richie claims that his father is a werewolf. "The Boy Who Cried Werewolf" is a nice werewolf film, with the story of a boy that knows that his father is a werewolf but nobody believes him.