He was followed all the time by the man whose footsteps made no sound.

At last he slowed down, left the park, and turned into a brightly lit pub. He ordered a whisky-and-soda, tossed it down, and ordered another. By ten o’clock his eyes were glazed and his sallow cheeks tinged with red. He left the pub, and kept reasonably steady as he walked back to the single room where he lived.

Once inside, he kicked off his shoes, tugged off his collar and tie, and dropped on to the bed. He lay in a drunken stupor for some time, then fell into a deep sleep.

It was a small room with a single bedstead, a wardrobe, a dressing table, two chairs and a few oddments. A gas fire with two broken filaments was near the head of the bed; a slotmeter was in the corner.

For half an hour the only sound was Brown’s heavy breathing. Then a scratching sound came at the door. Brown slept on. The scratching sound continued for some minutes, then stopped, and the door opened slowly. A little man came in, closed the door behind him, and switched on the light. Brown did not stir. The intruder looked about the room, pushing at the fingers of his thin leather gloves. He went to the gas fire, taking some coins out of his trousers pocket; three shillings were among them. He inserted the shillings into the meter, pausing after each one dropped, and listening in case anyone came up the stairs.

No one came.

He turned on the gas, which made a gentle hissing sound. The smell began to fill the room as the man went out. He made no attempt to lock the door, but crept downstairs, unobserved, and walked off towards the park.

Brown slept on. . . .

Paul Raeburn’s Park Lane apartment overlooked Hyde Park, but was high, so that all sound of traffic was muted. There were seven rooms, each luxurious. The decor by Lintz was a masterpiece; rich tapestry curtains, rooms in different periods, thick pile carpet everywhere to deaden the sound of movement: this was a millionaire’s dream.