Deeper Addiction. Holly Deeper Fantasies, #3

Holly Deeper is an adventurer, a woman of mystery and intrigue. She is a bisexual secret operator, who seduces and enslaves other women. She is also the submissive consort of a man known only as Master. Holly and Master may be supernatural beings. They know the silent desires of the women they hunt. They prowl the heart of the city and out to the wealthy suburbs, making the darkest fantasies of these women come alive.  Deeper Addiction Holly has found a married woman, Roberta, who has embezzled a lot of money from the company where she worked.
Holly contacts Roberta, and informs her that she knows Roberta's secrets. Now Roberta is Holly and Master's slave. They schedule meetups with her, where they use and abuse her however they like. Every morning, Roberta has to call a phone number to get her meeting place and time. She becomes addicted to this daily routine. She is hopelessly aroused by her enslavement. Every day, she can't wait to find out what new humiliation will befall her. The sessions are growing in intensity.  Roberta doesn't want it to stop.