Secret Oasis (The Oasis Trilogy #3)
Cassandra Pierce

Soon the fearsome creature is preying on Heath’s fellow werewolves, and the only person with any answers has disappeared into the desert. Only Wyatt remains to assist in the hunt, but the approaching full moon is having a strange effect on him, too. Heath finds himself torn between protecting the peaceful desert community of Oasis and shielding Wyatt, the man he has fallen for, from the supershifter who has made him its next target.