A Pup Named Scooby-Doo

Season 1, Episode 6

Episode Title: The Babysitter From Beyond

Air Date: 1988-10-15

Overview:

Scooby and Shaggy go to see a scary film while dropping off Shaggy's baby sister at the sitters, but they are horrified when they find the sitter is hideous. What's worse is that the monster movie character has come to life and an escaped convict is on the loose.