Tech-savvy hacker Nimue Hart has mastered the art of staying invisible, living off-grid in her Airstream and hiding from the Russian mob who want her silenced. But when a rescue mission forces her into the spotlight, her carefully constructed world begins to crumble.

Grand Canyon Backcountry Ranger Liam Kingsley buried his heart in the Swiss Alps a year ago after a tragic climbing accident. Now he keeps tourists safe and his emotions locked away--until a mysterious woman with secrets of her own makes him question everything he thought he knew about safety.

As their worlds collide, Nimue and Liam must navigate more than just the treacherous canyon trails, and their growing trust in each other might be their only lifeline. But when Nimue's past catches up with them at the canyon's edge, Liam faces his worst nightmare all over again--this time with a woman he can't bear to lose.