Skurzynski, Gloria. Mysteries in our national parks ##8

Jack can't believe what he's hearing. His sister is being held hostage. Whoever snatched Ashley must have been following the Landons as they explored Death Valley National Park. But what do they want with Leesa? When Jack discovers why Leesa is on the run, he is determined to protect her. But how can he do that and save Ashley, too? One thing he knows for sure, failure is not an option. National Geographic supports K-12 educators with ELA Common Core Resources. Visit www.natgeoed.org/commoncore for more information

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