be able to add something. In my unconscious ramblings there might be something that fell into a pattern if it could be pieced together. But this was a failure, too. The hospital super was sorry, but Dr. Thorndyke had left for the Medical Research Center a couple of days before. Nor could I get in touch with him because he had a six-week interim vacation and planned a long, slow jaunt through Yellowstone, with neither schedule nor forwarding addresses. I was standing there on the steps hoping to wave down a cruising coptercab when the door opened and a woman came out. I turned to look and she recognized me. It was Miss Farrow, my former nurse. "Why, Mr. Cornell, what are you doing back here?" "Mostly looking for Thorndyke. He's not here." "I know. Isn't it wonderful, though? He'll get his chance to study for his scholarte now." I nodded glumly. "Yeah," I said. It probably sounded resentful, but it is hard to show cheer over the good fortune of someone else when your own world has come unglued. "Still hoping," she said. It was a statement and not a question. I nodded slowly. "I'm hoping," I said. "Someone has the answer to this puzzle. I'll have to find it myself. Everyone else has given up." "I wish you luck," said Miss Farrow with a smile. "You certainly have the determination." I grunted. "It's about all I have. What I need is training. Here I am, a mechanical engineer, about to tackle the job of a professional detective and tracer of missing persons. About all I know about the job is what I have read. One gets the idea that these writers must know something of the job, the way they write about it. But once you're faced with it yourself, you realize that the writer has planted his own clues." Miss Farrow nodded. "One thing," she suggested, "have you talked to the people who got you out from under your car yet?" "No, I haven't. The police talked to them and claimed they knew nothing. I doubt that I can ask them anything that the police have not satisfied themselves about." Miss Farrow looked up at me sidewise. "You won't find anything by asking people who have never heard of