Scooby-Doo! Mystery Incorporated: Season 2, Episode 7

2 - 7: The Gathering Gloom

A zombie ghoul attacks the cemetery, with the prime suspect being the grave digger, Evallo von Meanskrieg, who's a deadringer. But only Velma sees the connection, and has to expose the hoax by herself. Meanwhile, Fred and Shaggy fall in love with three beautiful young immigrants to the silent jealousy of Daphne.