Over the Edge by Susan May Warren

When a woman running from the mob meets a ranger haunted by his past, the Grand Canyon’s dangers might be the least of their troubles.

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. With mobsters closing in, a dangerous treasure unearthed, and lives hanging in the balance during a catastrophic flash flood, 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.

Perfect for readers who love their romance with a shot of adrenaline, OVER THE EDGE delivers heart-pounding action, breathtaking rescues, and the sizzling chemistry between a protective ranger and a brilliant woman on the run.