Enthralled, Book 2: Succumbing to Slavery (tease/anal/enslavement erotica)

Billionaire Stefan drugged escort Annie Lovett, turning her into his moaning, begging cock-slave. Now he wants her to be his forever. Can she resist, or will the lure of sex and domination get the better of her? And when the sex-enhancing drug shows its side-effects, can she endure them, or will she become a slave to her own desperate, needy body? How badly does Annie really want to be free...?