Instinct - The Evolutioneers, #2

Ripley Jorgensen had believed the biggest shock in his life was developing shape-shifting powers, but that was nothing compared to learning that one of his teammates, the woman he loved, was a complete fraud. Not only did she steal someone's identity, she may have committed murder. Alisia had figured there was no better place to hide out than in a hidden mountain fortress surrounded by superheroes.
Surely no one from her past would think to look for her there-that is, until her murderous father hired the Evolutioneers to find his missing daughter and blew her cover. Now she's on the run with not only her former friends right on her tail, but also the man who has her scent embedded in his soul. Ripley doesn't just want answers. The beast within has determined that Alisia is its mate. Until he claims her as his own, the fight between man and animal grows stronger every day.
And if she should refuse him? The man would be lost to the beast. Forever.