WHEN NANCY HAYES was sixteen she liked to babysit. She didn’t have to babysit, she could have had a date almost any night of the week. She didn’t need the money, either; her father sent her a check for $100 every month in an envelope marked PERSONAL that came the same day her mother received her alimony check. Nancy babysat because she liked to.

It was while she and her mother were living in Fort Lauderdale in a white $30,000 house with jalousy windows and terrazzo floors and a small curved swimming pool in the yard, not quite seven miles from the ocean. Not far from them, on the other side of the Ocean Mile Shopping Center, the houses were larger, on canals, some with cruisers moored to the dock. The people who lived here were not year-round residents but stayed usually from January through Easter. They went to several parties a week and those with young children, if they were lucky, got Nancy Hayes to babysit for them. They liked Nancy: really a cute kid with the dark hair and brown eyes and cute little figure in her T-shirt and hip-huggers. She was also polite. She stayed awake. And she usually brought a book.

The book was a good touch. She would bring one of the Russians or an autobiography and leave it on the coffee table by the couch until it was time to go, moving her bookmark thirty or forty pages before the people came home. What Nancy liked to do the first few times she sat for someone was look through the house. She would wait until the children were asleep, then she would begin, usually in the living room, and work toward the master bedroom. Desks were good if they had letters in them or a checkbook to look through. Kitchens and dining rooms were boring. Florida or family rooms had possibilities only. But bedrooms were always fun.