One last chance at fortune--or disaster.

When it becomes clear to the Summer Rangers of Grand Canyon National Park that the treasure hunters aren't going to stop--and the injuries will only keep mounting--they have no choice but to shut down the park. They'll have to find the treasure themselves to stop the chaos. Ranger dispatcher and former championship climber Eden Garrison has built her new life on solid ground--no more death-defying ascents, and no more tragic deaths. But when her secret past is exposed, she's forced back into the dangerous vertical world in the hope of saving lives.

Ranger and adrenaline junkie Teague Hamilton lives for the rush, but this mission isn't about glory--it's about the woman climbing beside him, whom he's harbored feelings for all summer. But Eden's walls are sky-high, and Teague knows the only way to reach her is to prove he'll never let her fall.

When family heir Marcus Roosevelt arrives with knowledge of the treasure's location and Eden's old climbing friend Kyle Morrison shows up to help end the deadly hunt, two teams are in pursuit. But Kyle and Marcus are not who they seem. When mysterious accidents start happening and teammates are injured, Teague and Eden realize this is much more than a search for treasure--it's a fight for their lives. They're about to discover the only treasure that matters is trust . . . and the only way out is together.