Reseda Juarez is dead.

Though she appears human, inside she's a ruthless, emotionless weapon, trapped between life and death. Cold and relentless, she serves as the government's ultimate super-soldier, hunting and exterminating preternatural beings with no mercy.

Five years ago, Kane killed an innocent, and his brother lost the love of his life. Now, as the reluctant alpha of the Thunderbirds--a tribe of shape-shifting warriors--Kane must protect his family from the vicious wolf shifters that tore them apart. But he's haunted by the past--and driven by guilt.

When Reseda's mother is bitten by a wolf, she and Kane must join forces to find the Mayan Pul Yah stone, the only cure. Ironically, it's the same stone that created Reseda's deadly existence. But the wolves are hunting it too--and they'll kill anyone who stands in their way.

As their journey intensifies, so does the dangerous attraction between them. Their powers grow stronger, and the secrets of their pasts unravel. But love may be the only weapon that can defeat an enemy no one saw coming.

Can they survive the deadly forces closing in on them--and the powerful feelings they can't control? Time is running out.