Episode Title:
There Is a Doctor in the House
Episode Description:
Shaggy and Scooby get a very unexpected new house guest — Phibes — when Evil Phibes, his nastiest clone, has kicked him out of his lair and taken over. Although a broken Phibes promises to be on his best behavior, he proves to be a very inconsiderate roommate, and makes prank phone calls to his doppelgänger that get him mad enough to obliterate the world with one of Phibes' own devices.