She wasn’t an unattractive woman, and a number of her colleagues had asked her out, but they were twenty years her senior, and she’d been vaguely repulsed. The men who had attracted her, the ones her own age, were the graduate students taking her seminars, and dating them violated her sense of ethics. As a result, she’d earned the reputation of being aloof, and they’d stopped asking.

That had finally changed when she’d received the Preeze fellowship. She was investigating top quarks as part of the ultimate quest for every physicist, the search for the Grand Unification Theory, that simple equation, much like Einstein’s E=mc², that would describe all the parts of the universe. One of the scientists she had met at a University of Chicago seminar had been Craig.

At first she’d thought she’d found the man of her dreams. But, although they could rethink Einstein’s Gedanken experiment without ever growing bored, they never laughed, and they never exchanged the sort of confidences she’d always imagined lovers should share. Gradually, she accepted the fact that their physical relationship was little more than a convenience for both of them.

If only her relationship with Craig had better prepared her to seduce Mr. Bonner. She knew men didn’t consider her sexy, and she could only hope he was one of those awful creatures who didn’t care very much with whom he was sexually engaged as long as he was physically satisfied. She feared he would recognize her for the fraud she was, but at least she would have tried, at least she would have a chance. And she had no alternative. She’d never use a sperm bank and risk having a brilliant child who would grow up as she had, a lonely freak of nature who felt disconnected from those around her.

The sound of chatter faded as the women left the rest room. She knew she couldn’t hide out forever, and she hated the image of herself cowering, so she finally opened the door. As she slipped out of the stall, she caught her reflection in the wall of mirrors and, for a fraction of a moment, thought it belonged to someone else.