It began as a purely sexual arrangement between anonymous strangers. Now, some time after it has ended, a woman and a man recall their unusual affair in separate interviews. She, single and unattached, placed an ad seeking a partner to join her in playing out a sexual fantasy she had long wanted to try. He saw the ad and responded. They differ on certain details -- he says they saw each other for six months, she believes it was three or four -- but both speak fondly of their time together. Talking to the unseen interviewer, they will pause every now and then for a private smile, a vivid memory....