The 13 Ghosts of Scooby-Doo

Reflections in a Ghoulish Eye (1x4)

Air date: Sep 28, 1985

Boguel and Weird send the gang an phony telegram signing vincent's name and plant a mirror that's a door to a another world when the gang enters their room their will be pulled into that world unfortunely the plan backfires and pulls the maid into the ghostly world and the gang is accused of her disapearance.