* * * * * There was silence for a moment. Then Perrie Rochelle said hesitantly, "Then Mrs. Folsom...." "Mrs. Folsom," Cavender said, "has also enjoyed the benefits of many private sessions with Grady. She, of course, was additionally paying very handsomely for them. Tonight, she reported seeing what she'd been told to report seeing, to set off the hypnotic chain reaction." "But," Perrie said, "she said her heart attacks stopped after she started using the instrument. I really don't see how that could have been just her imagination?" "Very easily," Cavender said. "I've talked with her physician. Mrs. Folsom belongs to a not uncommon type of people whose tickers are as sound as yours or mine, but who are convinced they have a serious heart ailment and can dish up symptoms impressive enough to fool anyone but an informed professional. They can stop dishing them up just as readily if they think they've been cured." He smiled faintly. "You look as if you might be finally convinced, Perrie." She nodded. "I ... yes, I guess so. I guess I am." "All right," Cavender said. He stood up. "You three can run along then. You won't be officially involved in this matter, and no one's going to bother you. If you want to go on playing around with E.S.P. and so forth, that's your business. But I trust that in future you'll have the good sense to keep away from characters like Grady. Periods of confusion, chronic nightmares--even chronic headaches--are a good sign you're asking for bad trouble in that area." They thanked him, started out of the office in obvious relief. At the door, Perrie Rochelle hesitated, looked back. "Mr. Cavender...." "Yes?" "You don't think I ... I need...." "Psychiatric help? No. But I understand," Cavender said, "that you have a sister in Maine who's been wanting you to spend the summer with her. I think that's a fine idea! A month or two of sun and salt water is exactly what you can use to drive the last of this nonsense out of your mind again. So good night to the three of you, and good luck!" * * * * * Cavender snapped the top of the squat little thermos flask back in place and restored it to the glove compartment of Jeffries' car. He brushed a few crumbs from the knees of his trousers and settled back in the seat, discovering he no longer felt nearly as tired and washed out as he had been an hour ago in the lecture room. A few cups of coffee and a little nourishment could do wonders for a man, even at the tail end of a week of hard work. The last light in the Institute building across the street went out and Cavender heard the click of the front door. The bulky figure of Detective Sergeant Reuben Jeffries stood silhouetted for a moment in the street lights on the entrance steps. Then Jeffries came down the steps and crossed the street to the car. "All done?" Cavender asked.