"Not long ago, Roy became a type of monster. The transformation took a year and a half, and now, one morning each week, he sits in a room of similar cases. The windowless room is plain, with a blue industrial carpet, a circle of brown cushioned office chairs, a blackboard, a pair of unused conference tables pushed to the rear wall and a faint hum from the air ducts. To reach it from the waiting area -- on the second floor of a probation building in Connecticut -- Roy and the other men walk down a series of corridors and around a series of turns that feel like a path through a maze. The room is wedged in a back corner. ''No one,'' a probation officer said, ''likes to think about what's back there.'' Roy wonders constantly how he wound up in this place, in the circle of 10 or 12 chairs, a circle of child molesters. His story begins on the beach and ends on the Internet. It seems to him that he was, only recently, a normal man, about 40, running a crew of technicians, repairing elaborate, computerized telecommunications equipment for Wall Street trading firms and in his off hours leading a wedding band, singing Frank Sinatra and Barry White at the Plaza. For a hobby, he flew kites -- kites bigger than most living rooms, brilliantly striped, with rippling streamers and ''space socks'' trailing more than a hundred feet behind, kites that could perform ballets when he held the lines. He recalls no history of longing for young girls. He had no criminal record of any kind. But then one summer, on vacation, his second wife pointed out her 11-year-old daughter's body. Roy and his wife were standing on the sand; his stepdaughter and her best friend played several yards in front of them at the edge of the surf. ''Look at those girls,'' Roy remembers his wife saying. ''They're changing already. You can see their bodies changing.'' "
