I had an interesting idea for a story...
... It goes something like this:
A women finds herself being stalked by a (very hadnsome) man who dominates her. He comes to her when she's along. She never sees or hers him come in, and he makes his exits swiftly and silently, while she's looking away or blindfolded. As if by magic, he is able to cause her pain or pleasure without touching her. In fact, he never touches her. All his domination is through verbal commands, and the aplication of pain and/or pleasure. Eventually she dicovers that he is just a figment of her imagination. He arose because of she had been supressing her submissive tendencies, denying they existed. This realization does nothing to quell his power over her, however. At least not until she embraces her submissiveness in a healthy fashion.