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? Watch out! The Timberline twins are on the loose. Bryce and Ashley are ATV-riding tweens from Colorado who unearth action-packed mystery and adventure wherever they go. From clearing the name of a local miscreant to thwarting a gold-stealing heist, the twins' growing faith and the strong example of their parents guide them through even the most life-threatening situations. With the trademark page-turner style used by Jerry Jenkins and Chris Fabry in the Left Behind: The Kids series, these fast-paced books will keep even reluctant readers on the edge of their seats. Readers will definitely be hooked! Perfect for ages 8-12.