The Reluctant King. Kinkaid Shifters, #7

One white lion plus one powerful mage equals an unexpected mate bond that changes everything. Sam Kinkaid never wanted to be king. As the last white lion shifter on Earth and reluctant Alpha of all lions, he's built a billion-dollar empire while keeping the supernatural world hidden from human eyes. But when a dangerous arms dealer with dark magic connections threatens everything he's sworn to protect, Sam needs more than his lion's strength.
He needs a mage of his own, and fate sends him Claudia. Claudia is a powerful young magic user, trained by one of the most formidable witches in the magical community. Hired to strengthen the wards around Kinkaid properties, she never expected to feel the pull of an undeniable attraction to the impossibly gorgeous billionaire shifter. As their professional relationship grows into something neither can deny, an ancient evil surfaces-the Venifucus, a secret society of dark mages who will stop at nothing to claim ultimate power.
From Houston boardrooms to a glamorous Monaco gala, Sam and Claudia must navigate deadly enemies, forbidden attraction, and supernatural threats that could destroy them both. When Claudia's magic tangles with Sam's protective instincts, the bond between them becomes their greatest weapon, and their most dangerous vulnerability. Can a reluctant king and a powerful mage defeat an ancient darkness, or will choosing love cost them everything?