Helen kept her eyes down while she poured his coffee and added two and a half lumps of sugar and the usual portion of cream. Then she stirred it for him, knowing he would be quite apt to forget to do so himself. Despite the half dozen titles bestowed upon him by universities and learned societies, she felt he needed looking after.

“Don’t forget that you have a lecture engagement this afternoon,” she admonished as she passed the cup across the table.

Mr. Hardwick nodded and sipped. “It is a most extraordinary case. The murder of that poor woman—assuming that it was a case of murder—seemed wholly unprovoked. I gathered from the conversation among the officers that no motive was in evidence. It looks like a wanton, despicable crime.”

Helen crumbled a piece of toast. “Professor Warburton is coming to see you at three this afternoon.”

“I have a memorandum of the appointment on my desk.” Mr. Hardwick smiled faintly. “Our minds seem to be pulling in opposite directions this morning. This Mr. Shei interests me. He appears to be a remarkable criminal. His audacity and the originality of his methods are unparalleled. I don’t know that I ever encountered anything quite so mystifying as the circumstances surrounding the murder last night. How the murderer went in and out without being seen is beyond understanding, and the subsequent removal of the body was the most amazing part of it all. There seems to be neither method nor reason in that. One thing appears certain. Mr. Shei could not have accomplished what he did unless he had been aided by accomplices. What do you think, my dear?”

Helen’s head was lowered over her coffee cup. The captive sunlight in her hair gleamed and flashed.

“Your extra pair of glasses are at the optician’s,” she reminded him. “Don’t forget to stop for it.”

Mr. Hardwick looked at her helplessly; then carefully, and from force of habit, he folded his napkin.

“I wonder whether the police will ever learn Mr. Shei’s identity,” he murmured musingly. “So far the scoundrel has contrived to mystify them completely, but some day his egotism and love of self-glorification are apt to cause his undoing. In the meantime, however, he is likely to do a great deal of mischief. The fellow’s effrontery is colossal, and his fearlessness and brains render him most dangerous. In some respects he bears a very close resemblance to that other notorious rogue, now reported to be in retirement.”

Helen drew a quick breath. She bent her head a little lower over her cup. Her right index finger traced a design on the tablecloth.