While camping in Zion National Park, Jake Evans and his friends uncover a new set of cryptic clues hidden in his grandfather's scrapbook. Battling unpredictable weather, unforeseen challenges, and an elusive adversary, the three friends are forced to rely on their problem-solving skills, the power of their growing friendship, and the courage to do the right thing.--Publisher's description.

"Before leaving on a two-month summer vacation, Jake Evans finds a gift from his deceased grandfather that will lead him on a scavenger hunt through ten of America's most rugged, wild, and beautiful national parks."--Page 4 of cover. After camping in Rocky Mountain National Park, Jake and his friends travel to the Great Sand Dunes in southern Colorado. Exploring the heart of the dunes, they stumble upon something both unexpected and dangerous. Through...

"When his new stepdaughter is kidnapped during a visit to the Grand Canyon, archaeologist Chuck Bender faces up to his secret past and his unfamiliar family-man role as he confronts every parent's worst nightmare--that of a missing child"--Page 4 of cover.

In the riveting second installment of the National Park Mystery Series, archaeologist Chuck Bender finds himself and his young wife and stepdaughters in the crosshairs of an unknown killer when he defends his brother-in-law from false accusations of murder in the brutal slaying of a resort worker in Rocky Mountain National Park.