Taking the envelope containing the diamonds from his pocket, he crowded it down into the depths of his clothing; then, snapping off the light, he went out.

Hastening down the street and across the bridge, he was soon threading deserted streets and dark alleys. In time he came out upon Bird place, a half street, ending in a wall. The passage was narrow, hardly more than an alley.

The night was exceptionally dark and the place cheerless—just the setting for a crime. Lights behind drawn shutters were few. Only the very wretched or very wicked haunted such habitations.

Hugging the wall, Johnny sidled along toward 316. He knew the spot exactly, for though Johnny had never been of the underworld, he had spent many a restless night prowling about in all parts of the city. Suddenly he flattened out in a doorway and stood motionless, breathing quietly.

Had he heard the faint pat-pat of footsteps? Had he caught the dark blue of a shadow on yonder wall? For a full three minutes he stood there; then hearing, seeing nothing more, he glided out and resumed his snake-like journey toward the door of 316.

This time he did not go far, for suddenly looming from dark doorways four huge forms sprang at him. Johnny understood it all in a moment. The note was but a trick. They had not intended to trust him to leave the diamonds. They did not live at 316 at all. They merely had meant to draw him to this dark alley, then to "get" him. Well, they would find him a tough nut to crack!

His right shot out, and a heavy bulk crashed to the pavement. His left swung and missed. A wild creature sprang at his throat. Johnny's mind worked like lightning. Four were too many. They would get him. He must have help. The cat cry of the underworld! He had known that cry two years before. He had many friends who would answer it. They had introduced themselves at his boxing bouts. They had liked him because he played a fair game and "packed a winning wallop." If any of them were near they would come to his aid.

Drawing a long breath, he let forth a piercing scream that rose and fell like the wail of a fire siren. At the same time he jabbed fiercely with his right. The man collapsed, but at that instant a third man struck Johnny on the head and, all but unconscious, he reeled and fell to the ground.

Faintly as in a dream, he heard guttural murmurs. He felt the buttons give as his coat was torn open. Then there came the ringing report of a shot from the distance.

"Da bolice!" came in a guttural mutter.