In minutes they were flying out along Riverside Drive through the growing morning sunlight. Around them the city was waking to a day of heart-felt rejoicing that the terror was lifted. Wade seemed the container of a strange grim force, and to Carton's questions returned no answer. But when they had drawn up before the familiar gray physics building and had entered the equally familiar little laboratory and ante-room, Carton found Grantham awaiting them, his shoulder bound and his face haggard from a sleepless night. "You called me, Wade?" he asked. "Something you'd found?" Wade nodded. "Yes. But first I'd like to have President Ellsworth here. He's near here, isn't he?" Grantham nodded, frowning. "His home is--yes. I heard he'd been away for a day or two but he ought to be back by now." He turned to the telephone, spoke briefly into it, and when he had finished turned to Wade. "He's coming," he said. They sat silent until President Ellsworth entered minutes later. As he came in Carton noted that the two officers who had accompanied Wade and himself were lounging in the hall outside. The President's ordinarily genial face held some irritation. Wade Makes a Statement "What's this--a sort of post-mortem?" he asked. "I've just heard all about last night, Sergeant Wade--and it was too bad that the Invisible Master slipped through yours and Grantham's hands. But perhaps it's best that it's all over." "It is not all over yet," Wade said quietly. Ellsworth stared, as did Grantham and Carton. "You mean--" the President began. "I mean that I know at last who the Invisible Master is and where he is!" said Wade. Ellsworth seemed too astounded to speak, but Grantham leaned to grasp Wade's arm. "Is that true, Wade?" he asked. "You've actually found him?" "I have," Wade told them quietly. And then as the three others stared at him he went on. "You remember, Grantham, that you told me that in a case like this the ordinary police-routine, the gathering of fact after fact to apprehend a criminal, was useless? You may have been right, but I followed that routine and I've finally gathered among other facts, three facts that tell me everything I want to know about the Invisible Master. Had I had these three facts last night I could have saved us that struggle and Kingston's life, but I did not have them then. I have them now, though." "And the three facts?" Grantham asked. Ellsworth was staring as though bewilderedly, Carton leaning tensely forward. "The first fact," said Wade, "is something that President Ellsworth happened to say the other night--when we spoke of Gray--saying how Grantham and he had been hampered in their scientific work by lack of funds, and how it would be almost justifiable to take some of the city's pleasure-spent millions for the aiding of research." They were all silent. Ellsworth's face had flushed.