‘Professor,’ said the voice, ‘I can’t stand it any longer. I’m going to look for myself. I’m speaking from your office and the book is in front of me. If anything happens to me, this is to say good-bye. No—it’s no good trying to stop me. You wouldn’t be in time anyhow. I’m opening the book now. I . . . ‘ Openshaw thought he heard something like a sort of thrilling or shivering yet almost soundless crash; then he shouted the name of Pringle again and again; but he heard no more. He hung up the receiver, and, restored to a superb academic calm, rather like the calm of despair, went back and quietly took his seat at the dinner-table. Then, as coolly as if he were describing the failure of some small silly trick at a seance, he told the priest every detail of this monstrous mystery. ‘Five me