Rogue Moon - Rogue Moon Series, #1

Trevor Dare is a werewolf haunted by memories of a life viciously ripped away from him, all for the sake of another man's greed. They killed the woman he loved, and in so doing they unleashed a fury much too hot to ever be contained. It's not the life Trevor signed up for when he fell in love and was willingly bitten. They made him what he has become . a killing machine. Melissa Cartwright is a detective on a mission to get to the bottom of the strange, animal-like executions occurring around the city.
But when the blood trail leads back to Dare Enterprises, Melissa stumbles onto a world she never dreamed existed. Could the sexy-as-sin billionaire CEO really be behind the murders? Trevor knows he should do all he can to throw the nosey cop off his trail, but there's just one problem. He knew the instant he smelled her that the beautiful detective is his mate.