He turned, as though only by a studied insult could he find escape. I expected Kennedy to flare up, but he did not. Instead, he was ominously polite.

"Thank you," he said, with a mocking sarcasm that angered Shattuck the more. "I suppose I may reach you at your place of business, later, if I need?"

Shattuck nodded, but I knew there was a mental reservation back of it and that his switchboard operator would be given instructions to scrutinize every call carefully, and that, should we call up, Mr. Shattuck would have "just stepped out." As for Kennedy's tone, I was sure that it boded no good for Shattuck himself. Perhaps Kennedy reasoned that there would be plenty of other interviews later and that it was not worth while fighting on the first.

On his part Shattuck could do no less than assume an equal politeness as he bowed us out, though I know that inwardly he was ready to consign us to the infernal regions.

Kennedy was no sooner in the street than he hastened to a near-by telephone-booth. Evidently the same thought had been in his mind as had been in mine. He called up Doyle at the Wilford apartment immediately and inquired whether Honora Wilford had made any telephone calls recently. To my surprise, though I will not say to his own, he found out that she had not.

"Then who was it called Shattuck?" I queried. "I could have sworn from his manner that he was talking to a woman. Could it have been to the maid?"

He shook his head. "Celeste is watched, too, you know. No, it was not Celeste that called up. He would never have talked that long nor as deferentially to her. Never mind. We shall see."

Back on the Drive again, we walked hastily up-town a few squares until we came to another apartment, where, in a first-floor window, I saw a little sign in black letters on white, "Dr. Irvin Lathrop."

Fortunately it was at a time when Lathrop was just finishing his office hours, and we had not long to wait until the last patient had left after a consultation.

As we waited I could see that even his waiting-room was handsomely furnished and I knew that it must be expensive, for our own small apartment, a little farther up-town and around the corner from the Drive, cost quite enough, though Kennedy insisted on keeping it because it was so close to the university where he had his laboratory and his class work.