The Secret Beneath the Veil (Harlequin Presents Book 3462)

"You may kiss the bride." 

With five little words, Mikolas Petrides secures a vital business merger and finally repays his grandfather for rescuing him from the horrors of his childhood. But when he lifts his new bride's veil, it's not the woman he was expecting! 

Viveka Brice will do anything to protect her little sister, even pretend to marry a stranger. Her deception revealed, she flees the wedding, but is soon confronted by Mikolas. He is a man who always gets what he wants, and if the marriage is off, Viveka will have to compensate him—by becoming his mistress instead!