Frostbite by Christy Barritt

During this snowstorm, the true danger isn’t the cold—it’s the secrets people keep.

Olive Sterling and Jason Stewart expected Aegis’s Christmas retreat in the Smoky Mountains to be a rare chance to breathe, reconnect, and enjoy a peaceful holiday away from the chaos of their high-risk world. Instead, they discover that even the most picturesque setting can conceal the darkest of intentions.
When Olive finds a teammate’s body frozen in the snow, she instantly knows his death was no accident. As a brutal storm traps the team on the mountain with a killer in their midst, Olive and Jason must uncover the truth before the body count rises.

But when every footprint leads to more questions—and every teammate becomes a suspect—suspicion turns as lethal as the dropping temperatures. With trust eroding and fear closing in, Olive and Jason must decide who they can truly rely on—and who they can’t.