Ahhh, the 1970's. When disco ruled the airwaves and network television aired made-for-TV movies like Moon of the Wolf and Devil Dog: The Hound of Hell. To be honest, it's been a long time since I've seen Devil Dog: The Hound of Hell but I do remember it's a story about a Satanic dog that terrorizes a family and starred Kim Richards and Ike Eisenman from Escape to Witch Mountain. Richard Crenna played the father and the only one who believed the dog was a minion of Satan. Now if only Richard Crenna would go after Scrappy Doo.
*This was the third time Kim Richards and Ike Eisenman played brother and sister in a movie.