One warm night four children stood in front of a bakery. No one knew them. No one knew where they had come from. A super-special mystery for the Boxcar Children! Henry, Jessie, Violet, and Benny used to live alone in a boxcar. Now they have a home with their grandfather, and they're going to Ocean Adventure Park! The Alden children are on vacation at an aquarium in Florida, where they feed the penguins, swim with dolphins, and come face-to-face with a great white shark! The shark draws crowds and thrills the park's visitors. But the Aldens soon discover that the shark is in danger-someone at the park wants it gone. How will the Boxcar Children fish out the crook before it's too late for the shark?Warner, Gertrude Chandler is the author of 'Great Shark Mystery' with ISBN 9780807555323 and ISBN 0807555320.