Book #5 in the Timber Creek K-9 Mystery Series:

An explosion outside a community dance sends Mattie Cobb and Cole Walker reeling into the night, where they discover a burning van and the body of local outfitter. As the investigation ratchets up, Mattie and her K-9 partner Robo discover another brutal murder and a fearsome creature on the loose in the mountains, sending them on a hunt for a menacing band of killers.