When Mystery, Inc. are guests of honor at the grand opening of the Coolsville Museum of Criminology, a masked villain shows up and creates havoc before stealing the costumes of the gang's most notorious villains: Black Knight Ghost, Pterodactyl Ghost and Tar Monster. Could it be that their nemesis, mad scientist Jonathan Jacobo has returned and is trying to recreate their deadliest foes? Velma has a crush on the hunk / museum curator Patrick Wisely but why is he acting so suspicious? The Mystery Gang is hard pressed to succeed this time, since pesky TV reporter Heather Jasper-Howe insists they are buffoons.
Written by Mattias Thuresson
The original Scooby-Doo episode dealing with the pterodactyl ghost featured a villain and motive that were quite different. The pterodactyl/hang glider costume was used to smuggle pirated music, with the small-town mayor behind the whole scheme.
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Goofs
Continuity:
When the gang receives a fax on the results of the dinosaur scale, Velma takes it away from Shaggy and it appears that she is looking at one side of it. In the next shot the fax is turned the opposite way.
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