Sierra Cartwright 
Shockwave [EPUB ebook] 

There can only be one victor…He vows to personally deal with her…When Master Nathaniel Stratton catches Alani Dane, a professional submissive, yawning during a scene with one of his club’s most prestigious members, he vows to personally deal with her.In order to claim her…Nathaniel works to shatter the emotional barriers she’s erected to keep her heart safe and takes the biggest gamble of his life to claim her for his own.But she’s no man’s submissive…He alternately thrills and terrifies Alani. Even though she craves the intense release that subspace brings, at heart, she’s no man’s submissive. In this intense battle of wills, dominance and submission, love and commitment, he’s determined to tear down the walls around her heart.