With the power gained from the completion of the Triad, the Fianna Prime pack has finally defeated Kylian. But the end of their worst enemy is only the beginning of a new nightmare.The now lone wolf Sloane Beirne has an even more diabolical plan than his former Alpha envisioned. He's opening portals and releasing vicious beasts that don't belong in this realm. Rhys fears the bloodthirsty monsters are merely a distraction from Sloane's true horrific plans.And Rhys isn't even sure he can trust his own pack. Brianna may be living in Fianna Prime, using her magic to aid in the fight, but her loyalties are still unknown. Rhys and Makenna's disagreement over blooding her into the pack, and whether or not she is aligned with their new enemy, are fueling a new rift between them.Just when they need to stand together, they're falling apart.Sloane's plans thrust long buried secrets into the light. The ties that bind family and pack are challenged as they never have been before. Can Rhys and Makenna stop Sloane before he tears them and their pack apart? Or will the shadows of the past swallow them whole?