Otherworld Series by Jane Godman

When Stella Fallon journeys to Spain for a dream job, she never suspects that a cataclysmic confrontation is looming. Or that she is the last in an ancient line of dark sorcerers. For her new employer--an electronics billionaire--is actually a Faerie King desperate to harness Stella's powers so he can rule the Otherworld.The only one who can protect Stella is a man she once thought her guardian angel. Cal becomes human, but his centuries-old secret could destroy her trust... moreWhen Stella Fallon journeys to Spain for a dream job, she never suspects that a cataclysmic confrontation is looming. Or that she is the last in an ancient line of dark sorcerers. For her new employer--an electronics billionaire--is actually a Faerie King desperate to harness Stella's powers so he can rule the Otherworld.The only one who can protect Stella is a man she once thought her guardian angel. Cal becomes human, but his centuries-old secret could destroy her trust. Still, the pair cannot deny their white-hot attraction as they seek refuge in a cave to prepare for a battle of epic magnitude... less

Claiming her felt like his destiny…but could prove to be his ultimate undoing. Desperate to flee a horrific arranged marriage, Princess Tanzi turned to the only man who could help. Lorcan Malone, infamous necromancer, had vowed to come to her aid whenever she needed him. And even as they traveled from the mortal world into the fantastical Otherworld, Tanzi knew her true need ran deeper than just a rescue.She was his enemy’s daughter... moreClaiming her felt like his destiny…but could prove to be his ultimate undoing. Desperate to flee a horrific arranged marriage, Princess Tanzi turned to the only man who could help. Lorcan Malone, infamous necromancer, had vowed to come to her aid whenever she needed him. And even as they traveled from the mortal world into the fantastical Otherworld, Tanzi knew her true need ran deeper than just a rescue.She was his enemy’s daughter. A renegade like Lorcan had no business craving a Fae princess, one intended for a greater calling. Yet he was powerless to resist the pull to do more than protect Tanzi… less

KING OF THE OTHERWORLD The race is on to find the true heir to the faerie crown before the evil king Moncoya returns from exile. Mercenary necromancer Jethro de Loix will find the challenger to Moncoya's crown…for a price. One million mortal dollars. Outraged at Jethro's audacity, Princess Vashti, Moncoya's daughter, arranges to accompany him on his mission. Jethro doesn't want company, especially not from Moncoya's belligerent, pampered daughter... moreKING OF THE OTHERWORLD The race is on to find the true heir to the faerie crown before the evil king Moncoya returns from exile. Mercenary necromancer Jethro de Loix will find the challenger to Moncoya's crown…for a price. One million mortal dollars. Outraged at Jethro's audacity, Princess Vashti, Moncoya's daughter, arranges to accompany him on his mission. Jethro doesn't want company, especially not from Moncoya's belligerent, pampered daughter. But as their journey pits them against evil forces, their animosity soon gives way to an overwhelming physical attraction. When the trail ends on the legendary Isle of Avalon, can the pair face down the evil sorceress Morgan le Fay to claim a future they'd long denied themselves? less