At the Mercy of Her Pleasure - Antonello Brothers

As a member of the Thieves' Guild, a young professional thief called Senth takes on a mission that can make or break his career: Stealing from the all-powerful Empress. In return, he'll gain his captive brother's freedom. Bit of a lark for Senth, until he discovers he must infiltrate the site with a female partner whose pheromones are so addictive, he cannot even shake her hand. But he's a professional thief, so surely, he can steal one little kiss...
Rebel captain NarrAy must conceal all but her face. As a Better, her skin is so addictive no one dares touch her. Yet when she hires a young thief to infiltrate a facility belonging to the Empress, his youth and vitality sing to her senses. She craves touch, and their mission puts them in such close proximity, it's all but inevitable. He wants her. But if he yields to desire, he'll risk his brother's life and put himself in danger of addiction.
She wants him. But if she yields to her craving, she'll risk letting a prototype transporter end up in the hands of the Empress. Then again, if the mission is a success, she'll have this young man at the mercy of her pleasure...