Everywhere they turn, Ashley and Bryce find mysteries. Ashley seems to have a secret admirer. Bryce notices a suspicious vehicle near their home and school. When Bryce investigates, he comes face-to-face with a person he never expected to meet!

The Timberline family makes a weekend getaway for a visit to a gold exhibit but it leads to a search for a stolen gold nugget and danger for the entire family.

"Bryce and Ashley Timberline's friend Jeff is dying, and his collection of autographed sports memorabilia has disappeared. While Bryce and Jeff attempt a 200-mile bike hike for cancer research, Ashley does a little research of her own." --Page 4 of cover.

After joining a tennis camp at a local country club, twins Ashley and Bryce Timberline are blamed for outbreaks of vandalism there, and must work not only to clear their names, but also to find the real culprit.

Red Rock suffers a spate of "mailbox baseball" vandalism and twins Bryce and Ashley become witnesses.

When twins Ashley and Bryce Timberline investigate the burglary of a neighbor's house, they become involved with some alpacas and a guard dog as well.

"When horror writer Jake Konig suddenly disappears, Bryce and Ashley Timberline get caught in a mystery as scary as one of Konig's novels. A mysterious message on the writer's computer warns the twins to stay clear of Konig and his work. What's the real story?"--

A vacation aboard a houseboat puts the Timberlines up close and personal with a celebrity couple. Bryce and Ashley see real-life paparazzi in action while they work to solve a mysterious break-in on the celebrities boat. But are they up for the challenges of a brutal Grand Canyon hike?

Allyson Scheel grew up in an unusual family. Her father, Curt Scheel was an immigrant laborer from Germany who never discussed his past. She would often see her father crying as he read letters from his homeland. After saving money for years he planned on making a trip back home. But when Allyson does some checking, she discovers that her father is not booked on a flight to Germany. Where is he really going. What dark secrets lie in his past?

When the school bully hassles and threatens Ryan, Dallas gives his younger friend advice on what to say and how to act to avoid trouble. But it doesn't work, so Dallas must step in.But when Dallas confronts the bully, even though Dallas is bigger, he doesn't seem to be afraid. And when the bully again bothers Ryan and Dallas decides to take action, he finds himself facing not one young tough, but a whole gang.