Her Prisoner (by Susan Strict)
He struggled, pulling at the cords that held him but they were far too strong for him to break, and his fingers had neither the strength nor the flexibility to undo the tight knots. If his ankles had not been tied too he might have been able to wriggle far enough up the bed to reach the cords with his teeth, but the cords fixed around the lower end of the bed restricted his movement too much for that. He was completely helpless until she decided to return and to release him.
He was not overly concerned. Although this was not quite what he had anticipated, it was no more than a game. She said she wanted to try "the dominatrix thing" as she put it, and he had no doubt that shortly she would come back and make love to him before she released him. It was quite possible that she had changed her mind and that she would simply release him, and while that would be a disappointment, it would be no more than he expected.