Opus by LaVerne Lewis

When the most precious Caster artifact goes missing, its retrieval becomes the difference between peace and civil war.
Powerful warlock, Stellan Kierkegaard was united with his Caster’s Canticle in Leilani Gibson, whom he believed to be human, but is actually an equally powerful Caster who’s been raised by human parents. During surgery to repair Leilani’s severely damaged heart, the power which someone had been siphoning from her since childhood was returned, revealing her true nature.
Now, the Kierkegaard coven is on the run from their governing body, The Hemlock Society, and the unknown person or persons who plotted to relieve Leilani of her power. Shortly after learning that the second half of the Caster Prophecy, the Caster’s Opus, has been stolen from the Hemlock Society in Stockholm, Leilani is kidnapped, sending Stellan into a Caster rage.
Will Stellan and Leilani retrieve the Caster’s Opus in time to join the Dark and Light covens together as prophesied, or will the Caster World descend into chaos?