When undercover cop Matt Guiliani arrived at the Bar Naught ranch in the dead of night to sting a vigilante leader, he got the biggest surprise of his career: his prey was already dead...and Matt was staring down the double-barrelled shotgun of the beautiful and frightened Fiona Halsey.

With a sinfully sexy body and sass to spare, Fiona was no innocent. But how she was connected with the murder or the secret organisation, Matt wasn't sure. He only knew that Fiona was the one woman to scale the walls of his impenetrable defenses. Yet to let down his guard in this assignment, with Fiona, would be costly. Because this time it would mean his heart...if not his life.