A hidden treasure...a rising danger...White Mountains National Park is facing dire straits. Someone is determined to see the park shut down. As the situation escalates, National Park Ranger Christopher Larson and his trusty German Shepherd partner, Trooper, are determined to solve the mystery before time runs out...or someone gets hurt.Meanwhile, Chris' young foster sister, Isla Alistair, is determined to solve a mystery of her own. Who is the mystery horse she spotted on Starbrook land? Joined by her sisters, Isla follows a trail of clues... and discovers more then she bargained for.
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