Scream! Scream! Time For You To Die! was a movie planned to be made by Argus Fentonpoof. Vincent Van Ghoul was cast to play the monster, Nightfright, but when he pulled out, Argus couldn't make it.
Scooby-Doo! Mystery Incorporated
Shaggy Rogers found the movie script in Van Ghoul's bedroom, and it was an important clue to the identity of the monster.