Villain: Que Horrifico/Mary-Ann Gleardon There's a new girl at Crystal Cove High: Alice May, who Fred falls for, much to Daphne's irritation.Alice May is shown to be a ghost with a reputation for taking guys to the prom and making them disappear forever.After being forced to spend the night at a local hotel the gang ultimately solves the mystery. E in the Mystery Machine telling them that this mystery "is only one piece of the puzzle".
The gang receives an old newspaper article from Mr.
E about four kids who disappeared in the Crystal Cove caves many years prior.
During a volleyball tournament down at the Crystal Cove beach a giant crab beast attacks those who are present.
The beast kidnaps Daphne which places Fred in a state of total shock rendering him unable to say anything that doesn't relate to her.
Villains: The Gator People/Greta, Gunther and Grady Gator Note: A man resembling Clark Griswold, from the film National Lampoon's Vacation, appears in the cold open with his family as lost tourists, traveling in the distinctive Wagon Queen Family Truckster from the Vacation film.
When Fred is showing Daphne his scrapbook of traps, he mentions some villains they caught with particular traps, including Carlotta the Gypsy and the Phantom of Vázquez Castle from the original Scooby-Doo, Where Are You! The panner in the Gatorsburg flashback is Nugget Nose from the Galloping Ghost segments of the Buford and the Galloping Ghost show.
When Scooby breaks through the door where Fred and Daphne are, he recreates John Candy running from the bear and standing in front of the door out of breath in The Great Outdoors.
Crystal Cove is being terrorized by a mysterious Ghost Truck that has been running people off the highways.
The gang manages to capture the "man crab" and to save Daphne.
When Velma shows her the newspaper article from Mr.
E" and remarks that they have uncovered "a truth that should have remained buried" and that "the real mystery has just begun".