Might be a Predator
Derek was almost to Beacon Hills when the bond to his alpha snapped. So. Some wolf killed his sister and alpha. Stole her spark. This wasn’t something Derek was willing to accept. It takes Derek a few days too long to situate himself. By the time he’s ready to get started, the police have already found half his sister’s body and the new alpha has bitten some kid. He doesn’t care much about the new beta beyond the fact that he might be a way to track the alpha....