An Incredible Case of Dinosaurs

Also known as A Bad Case of Dinosaurs.

When Miss Frost sees a very large something in her swimming pool, she calls in the Quark geniuses and their best friend Giles to investigate. With the help of Tina's latest invention, a bathysphere, they discover a pair of Hydrosaurs, supposed to have been extinct for millions of years. Miss Frost thinks they'll make her a fortune, but Giles and Kevin have other ideas.