Hair of the Dog by Ashlyn Kane
It's nine o'clock the morning after his father's funeral, and Ezra Jones already knows it's going to be a bad day. He wakes up hungover, sore, and covered in blood. Then it gets worse: the handsome and compelling Callum Dawson shows up on his doorstep claiming Ezra's been turned into a werewolf. Ezra wants to be skeptical, but the evidence is hard to ignore. Ezra doesn't have a lot of time to get used to the rules Alpha Callum imposes-or the way his body responds to Callum's dominance-as he's busily working for the CDC to help uncover the origins of a lycan epidemic. When the sexual tension finally breaks, Ezra barely has time to enjoy it, because a new danger threatens. Someone wants Ezra for their own unscrupulous purposes and will do anything to get him.