He needs her to catch a murderer. She needs him to heal her heart.

On the trail of a serial killer, FBI Agent Elias Broyles had enlisted the help of park ranger Sayles Green to track his suspect deep into Zion National Park. Despite their constant clashing, Elias realised ranger Sayles was tremendously skilled and tremendously guarded. When flash flooding caused their manhunt to become a fight for the own lives, the determined agent realised he’d started to care more about Sayles than finding the killer. Elias had brought an untrained woman on a deadly mission. He’d do anything to make sure she got out alive.