The Golden Jackal. Kinkaid Shifters, #8

When darkness calls, the jackal answers. Petra Haas had a perfectly ordinary life - cataloging medieval manuscripts at the British Library, avoiding her neighbor's passive-aggressive notes, and pretending she didn't have strange intuitions she couldn't explain. Then a phone call changed everything. A distant cousin she'd never met had died and left her a fortune, a German castle, and a legacy of darkness she never could have imagined.
The moment she arrived at Kettering Castle, Petra knew something was very wrong. The silver in the underground workshop made her skin crawl. The staff watched her every move. And the mysterious stranger who emerged from the shadows insisted that magic was real, dark mages were coming for her, and she'd just inherited a war along with the castle. Seth Taren had spent decades fighting as a mercenary.
As a golden jackal shifter nobody quite knew which side of the eternal battle of good vs. evil he stood on. He was working for the jaguar and lion Alphas and was supposed to gather intelligence on Kettering's operations, not protect an innocent librarian who had no idea she'd stumbled into a supernatural battleground. But from the moment Petra squared her small shoulders and decided to fight back instead of run, Seth knew she was different.
She was brave. She was his. Now, with dark forces closing in and an ancient evil stirring, Seth and Petra must learn to trust each other, and the impossible connection growing between them, before the Venifucus destroys everything. Some secrets are worth protecting. Some loves are worth fighting for. And some mates are destined to change the world. Perfect for fans of Ilona Andrews' Kate Daniels series and Nalini Singh's Psy-Changeling world, The Golden Jackal delivers heart-pounding action, sizzling chemistry, and a love story that will keep you reading long into the night.