He examined the remaining contents of the room, but found nothing of interest until he came to the door. This was solidly made and edged with rubber, and he felt sure that it would be almost completely sound-proof. It was, moreover, furnished with a well-oiled lock.

“Pretty complete arrangement,” Willis thought as he turned back to the outer office. Here he conducted another of his meticulous examinations, but unfortunately with a negative result.

Having silently unlocked the door and pulled up the blinds, he climbed out on the window sill and closed the window. He was unable to refasten the hasp, and had therefore to leave this evidence of his visit, though he hoped and believed it would not be noticed.

Lifting down the ladder, he carried it to the cottage and hid it therein. Part of his task was done, and he must wait for daylight to complete the remainder.

When some three hours later the coming dawn had made objects visible, he again emerged armed with his tools and coil of insulated wire. Digging a hole at the bottom of the down-pipe, he connected his wires just below the ground level to those of the telephone. Then inserting his spade along the face of the wall from the pipe to the hedge, he pushed back the adjoining soil, placed the wires in the narrow trench thus made, and trod the earth back into place. When the hole at the down-spout had been filled, practically no trace remained of the disturbance.

The ground along the inside of the hedge being thickly grown over with weeds and grass, he did not think it necessary to dig a trench for the wire, simply bedding it beneath the foliage. But he made a spade cut across the sward from the hedge to the cottage door, sank in the wire and trod out the cut. Once he had passed the tiny cable beneath the front door he no longer troubled to hide it but laid it across the floors and up the stairs to the broken window. There he attached the field receiver, affixing it to his ear so as to be ready for eventualities.

It was by this time half past six and broad daylight, but Willis had seen no sign of life and he believed his actions had been unobserved. He ate a few sandwiches, then lighting his pipe, lay down on the floor and smoked contentedly.

His case at last was beginning to prosper. The finding of Coburn’s murderer was of course an event of outstanding importance, and now the discovery of the telephone was not only valuable for its own sake, but was likely to bring in a rich harvest of information from the messages he hoped to intercept. Indeed he believed he could hardly fail to obtain from this source a definite indication of the nature and scope of the conspiracy.

About eight o’clock he could see from his window a number of workmen arrive at the distillery, followed an hour later by a clerical staff. After them came Archer, passing from his car to the building with his purposeful stride. Almost immediately he appeared in his office, sat down at his desk, and began to work.

Until nearly midday Willis watched him going through papers, dictating letters, and receiving subordinates. Then about two minutes to the hour he saw him look at his watch, rise, and approach the door from the other office, which was in Willis’s line of vision behind the desk. He stooped over the lock as if turning the key, and then the watcher’s excitement rose as the other disappeared out of sight in the direction of the filing room.