Red Moon Rising (Survivors: The Gathering Darkness, Bk. 4)

After rescuing Alpha and Beta's pups from drowning in the Endless Lake, Storm is a hero to her Packmates. She even feels respected - for now - by those who have always distrusted her for being a Fierce Dog. And with one crisis averted, her Packmates are convinced that more good is on the horizon.

Only Storm knows that danger still walks among them. She isn't sure which dogs she can trust, and making the wrong move will only lead her Packmates to suspect her. But it won't be long before the traitor dog strikes again. The pack must find a way to stand together against the most malicious and elusive enemy they have ever known . . . before terror and doubt tear them apart forever.