Happy Halloween Scooby-Doo! 4-Film Collection includes the family favorites: Happy Halloween, Scooby-Doo! - Scooby-Doo and the gang team up with their pals, Bill Nye The Science Guy and Elvira Mistress of the Dark, to solve this mystery of gigantic proportions and save Crystal Cove! Scooby-Doo! Frankencreepy - Velma discovers she's inherited her great-great-uncles' cursed castle in Transylvania, Pennsylvania. This Scooby-Doo adventure has enough spooky fun to make the whole family come alive! Scooby-Doo! And The Goblin King - The almost-never brave Great Dane detective matches wits with the king of the Goblins. Can Scooby uncover the mystery and stop the Goblin King from succeeding at his wicked plans? Scooby-Doo! Camp Scare - Scooby-Doo, Shaggy, Freddy, Daphne and Velma fish for clues to solve the mysteries of The Woodsman, The Fishman and The Banshee of Black Canyon.