The Night Voyagers — Donn Kushner

He had "disappeared," Manuel's parents agreed. Many people disappeared these days. One instant they were where they should be: at work, or in their gardens, or walking down the street to buy a newspaper. And then suddenly they weren't anywhere. No one had seen them; sometime no one had heard anything about the. The stories of their lives just stopped, and remained unfinished. The way they vanished seemed worse than death itself.