"Scooby-Doo and the Ghoul School" (1988)\nDir. Charles August Nichols and Ray Patterson\n\nIn this episode, Katie walks Luke through a period of Scooby lore known as the "Red Shirt Shaggy Trilogy." When Shaggy, Scooby, and Scrappy hit the road in their own van that is NOT the Mystery Machine because the Mystery Machine belongs to Fred and Mystery Inc. is NOT involved. This is a side story. Deal with it.