The number one Amazon bestselling author of The Treehouse and The Abduction of Sarah Phillips returns to young adult mystery with this new adventure!

Palo Duro Canyon - nicknamed "the Grand Canyon of Texas" - is the second-largest canyon in the United States and the largest state park in the Texas panhandle. Once home to many Native American tribes, though long gone, traces of their civilization can still be found in the canyon to this day.

Rachel Hernandez, an anthropology student at West Texas A&M University has discovered something that hasn't been seen in nearly 200 years: in the depths of Palo Duro, a fabled cave full of Native American carvings and paintings.

Shortly after her discovery, she vanishes without a trace, the only evidence left behind are her bootprints in the trail that leads to the caves. Rachel's twin brother Ricky and her best friend Jordan seek answers in her disappearance, and what they find may be the biggest cover-up in history!

Returning to young adult adventure and mystery, the number one Amazon best-selling author Andrew J. Brandt brings an intriguing story of things lost...and things found.

Advanced reviews for Palo Duro:

"...brings to mind the greats like Nevada Barr and Tony Hillerman." (Danielle Girard, USA Today best-selling author)

“...a heartwarming action adventure with characters you’ll root for and a setting that’ll make you want to put on your hiking boots.” (Rick Treon, award-winning author of Deep Background and Let the Guilty Pay)

"A modern day episode of the Twilight Zone." (Mark R. Hopkins, The Penny Tourist)

"This book will make you want to go explore." (Niccole Caan, ABC7 Amarillo)