Jake, Amber, and Wes encounter new dangers and find their friendship tested as they follow the clues Jake's grandfather hid away in the old scrapbook. The stakes are higher, and the history goes deeper as the three kids put their heads together to solve a puzzle that is perhaps hundreds of years in the making.

While she studies condors in the Grand Canyon a scientist's life is threatened, and the strange, hostile, teenage computer whiz in her family's foster care might be involved.

Tired of the strict rules and annoying children at her father and stepmother's house, twelve-year-old Tess walks across Tucson to her mother's condo, stopping for the night at a state park where she is adopted by a very special cat.

"Twelve-year-old Silas's little brother is the worst! The baby, George, sucks up all of their parents' time and energy until there's nothing left. But when the family suddenly comes into ownership of a run-down summer camp halfway across the country, Silas is hopeful things will change. The camp is in worse shape than they thought, however, and will require a lot of help to reinvigorate it. When Silas finds an old lion's pelt that he thinks contains...

"Oliver loves mountain biking on rocky, wooded trails. And he has an unlikely partner--his much older half sister Morgan. One summer evening while out with their dog Digby, Oliver tries to impress Morgan by leading her down a new trail he claims to know. They end up at the bottom of a canyon with no choice but to push their bikes up the steep trail. Then disaster strikes. Morgan slips and badly injures her ankle. With no cell service, it's up to Oliver...

Ten-year-old Pablo falls out of his father's old truck on the way to pick melons in Arizona, but with the help of a coyote pup, he makes it across the border.