Full Circle - Shadow Walkers Series, #1

Acacius is a blurred line between light Magik and dark blood Magik. A myth. Chained to life chasing shadows and finding dead ends, love has come and gone but hope has never waned. Eurice, a curious shape-shifting Leopard wants to know more about reclusive Acacius and why she's so drawn to him. Life at the laboratory has predictable interactions, real life is a little complicated, but she's willing to try. A Rogue, Spellweaver born of sacrificial Magik, on the loose has all families caught in his meddling wanting closure.
Their love has survived through the odds time and time again but against dark Magik what's more powerful?