French looked up his notebook.

“I seem to know a deal more about it than you do,” he grumbled. “He is a clerk in Mr. Duke’s office, name of Harrington—Stanley Harrington. I interviewed him with the others in the office on the day after the murder, and he told me about the engagement. It seemed to be going strong then. When did they postpone it?”

“They didn’t say that either, sir.”

“Well, find that out, too. That’ll do for the present.”

That evening French, in the guise of an out-of-work mechanic, took up his stand near Mr. Duke’s house, and presently saw the old gentleman arrive back from business in his car. An hour later he followed the chauffeur from the garage to a house in a small street off Esther Road. There French hung about for perhaps another hour, when he had the satisfaction of seeing the quarry emerge again, pass down the street, and disappear into the Rose and Thistle bar. This was just what the Inspector had hoped for, and after a few minutes he followed him in.

To scrape acquaintance was easy enough. French, as a motor mechanic out of work, was provided with a ready introduction to any chauffeur, and over a couple of glasses of beer he learned first of the chances of jobs in the district, and secondly, by skilful pumping, many details of his new companion’s work and of the Duke menage. But he heard nothing that seemed in the slightest degree suspicious or interesting. The man himself, moreover, seemed of an honest, harmless type, and much too stupid to be concerned personally in enterprises with keys of safes.

For a day the inquiry hung fire, and then Sergeant Nolan brought in a report which turned the Inspector’s thoughts into still another channel. Nolan had, it appeared, taken the pretty housemaid, Rachael, first to the pictures and then to supper at a popular restaurant. The girl had what the Sergeant called “the gift of the gab,” and it had only been necessary for him judiciously to supply an occasional topic, to have a continuous stream of more or less relevant information poured into his receptive ears.

First he had tried to ascertain whether any one had recently had access to Mr. Duke’s dressing-room during the night or early morning, and he soon learned that, prior to his own visit, no tradesmen had been in the house for many months. Moreover, the only visitor who had stayed overnight for a considerable time was Mr. Stanley Harrington, Miss Duke’s fiancée. The two young people had been feverishly engaged in rehearsals for a play given by a local amateur dramatic society, and for the four nights previous to the entertainment Miss Duke had refused to allow her swain to waste time in going to and from his rooms, and had insisted on his putting up with them. This occurred about a month before the murder, and Harrington had slept in a room just opposite to Mr. Duke’s. It was obvious, therefore, that had the key been left in the dressing-room at any time, Harrington could easily have taken the necessary impression.

Nolan then went on to tell what he had found out as to the postponed wedding, and in this French felt he had food for thought. It appeared that the trouble, whatever it was, had come suddenly, and it had taken place on the day after the murder. On the evening of the crime, so Rachael had said, Mr. Duke was not at home for dinner, but Mr. Harrington had turned up. He and Miss Duke had dined together, and then everything was couleur de rose. They had gone out together after dinner. About ten, Miss Duke had returned and had gone straight to bed. Almost certainly, therefore, she had not known that night of Mr. Duke’s call to the office. Next morning she had breakfasted with her father, and had presumably then learned of the tragedy. But not five minutes after breakfast began she had slipped out of the room and had made a telephone call, and directly Mr. Duke had left the house she had put on her things and followed him. She had been absent for about twenty minutes, and had then gone direct to her bedroom, where, on the plea of a headache, she had spent the day. When Rachael had had occasion to enter, she found her lying down, but the girl had heard her hour after hour pacing the room, and in her opinion, her mistress’s indisposition was more mental than physical. About four o’clock that afternoon Mr. Harrington had called. Miss Duke saw him in her own sitting-room, and during the interview some terrible quarrel must have taken place. Mr. Harrington left in about half an hour, and Rachael, who had opened the door to let him out, said that he looked as if he had received his death warrant. His face wore an expression of the most acute consternation and misery, and he seemed like a man in a dream, stupefied by some terrible calamity. He usually spoke pleasantly to the girl when leaving, but on this occasion he did not appear to notice her presence, but stumbled blindly out of the house and crept off like a broken man. Later the same evening she had seen Miss Duke, and she noticed that her eyes were red and swollen from crying. Since then, the young lady had changed out of all knowing. She had become silent, melancholy, and depressed. She had grown thin and old looking, and was eating nothing, and, Rachael had opined, if something were not done, they would soon see her in a decline.

Inspector French was not a little intrigued by all this information. That there was a connection between the murder of Charles Gething and the postponed wedding he could scarcely believe, and yet some of the facts seemed almost to point in that direction.