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 fat...