Her Beast of a Billionaire Boss by Lucy McConnell

When Bella Creer’s father has a heart attack and is unable to finish his contract for Adam Moreau, a ruthless lawyer based in Seattle, she steps in to take his place and save The Cove Phase II.
Adam, a billionaire who lives in a secluded castle on a cliff, is gruff, demanding, brilliant, and injured. An acid attack left its mark on Adam’s face but it’s his heart wounds that Bella sees clearly.
As she takes on the management of a multi-billion-dollar project, Bella’s confidence in herself strengthens and her attraction to Adam grows. But Adam didn’t become the best lawyer in the state by making friends and the wolves circle, ready to attack him at his weakest. Bella will have to be stronger than she’s ever been just to survive. And, before it’s too late, she’ll need to realize that her true power lies in her ability to love beyond measure.