Concealed (Book 6.5, the Caged series)

Our perceptions create our reality, even when they're wrong. Nobody understands this better than Gavin. Nobody. To most, he is a shadowy agent of chaos. His motives are questionable, his methods bizarre. But his journey is one of both protection and redemption, and his story is yet untold. Until now. The past and present you think you know are about to change. And you ll never see Ruby, Gavin, or their relationship the same way again.