HEIDI MASEFIELD'S house sat at the center of two and a half acres of prime land in Woodland, a suburban town twenty miles west of Boston. Near the southern side of this antique colonial stood an immense maple, whose shade fell on several windows in the summertime and kept the rooms cool. From one of its thick boughs hung a swing, two pieces of rope attached to a small legless chair. Except for the terrace at the back of the house and the driveway that led to a country road, the land was covered entirely by the manicured lawn. A line of lilac bushes encircled the property, replaced by low field-stone walls at the front entrance to the yard. During the summer the Masefields were staying on Cape Cod, in a beach bungalow near Fal-mouth, so the Wus could use the Woodland house for themselves. Heidi would be coming back every other week to pick up mail and pay bills. She and her two children wouldn't return until early September, when the elementary school started.

Two years ago Dr. Masefield, a plastic surgeon, had drowned in a sailing accident, so his wife had needed someone to help her with housework and to care for her son and daughter.