Twelve-year-old Jack, his younger sister, and the family's teenage foster child Troy go to Yellowstone National Park, where Jack's mother, a wildlife veterinarian, is investigating the report that wolves reintroduced to the park have killed a dog there.
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2 primary booksMysteries in Our National Parks is a 2-book series with 2 primary works first released in 1997 with contributions by Alane Ferguson and Gloria Skurzynski.
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