Here, between invisible walls, the fog hung thick and warm and sticky, crowding up close, with a kind of blowsy intimacy that whispered the atmosphere of the place. Occasionally, close to his ear, snatches of loose song burst out, or a coarse face loomed head-high through the reek.

But the boy was upon his native heath and scuttled along, whistling softly between closed teeth, as, with a dexterity born of long practice, he skirted slush and garbage sinks, slipped around the blacker gulfs that denoted unguarded basement holes, and eluded the hideous shadows that lurched by in the gloom.

Hugging the wall, he presently became aware of footsteps behind him. He rounded a corner, and, turning swiftly, collided with something which grabbed him with great hands. Without hesitation, the lad leaned down and set his teeth deep into the hairy arm.

The man let go with a hoarse bellow of rage and the boy, darting across the alley, could hear him stumbling after him in blind search of the narrow way.

As he sped along a door suddenly opened in the blank wall beside him, and a stream of ruddy light gushed out, catching him square within its radiance, mud-spattered, starry-eyed, vivid.

A man stood framed in the doorway.

"Come in," he commanded, briefly.

The boy obeyed. Surreptitiously he wiped the wet and mud from his face and tried to reduce his wild breathing.

The room which he entered was meagre and stale-smelling, with bare floor and stained and sagging wall-paper; unfurnished save for a battered deal table and some chairs.

He sank into one of them and stared with frank curiosity past his employer, who had often entrusted him with messages requiring secrecy, past his employer's companion, to the third figure in the room—a prostrate figure which lay quite still under the heavy folds of a long dark ulster with its face turned to the wall.