Wildlife veterinarian Olivia Landon and her family are in Maine, investigating the mysterious strandings of marine mammals on the rocky beaches of Acadia National Park. With the family is 14-year-old Bindy Callister, a temporary ward who has been bullied by her older brother. Jack, Ashley, and Bindy come upon a baby humpback whale stranded in a rocky tidal pool and barely alive. During the complex rescue operation that follows, no one notices when Bindy wanders off. By the time Jack and Ashley find her, Bindy is acting very strange. She knows who’s causing the strandings but is afraid to tell. Jack and Ashley must get her to talk before more lives are endangered!
Mysteries in Our National Parks: Out of the Deep by Gloria Skurzynski