Not a sound of any sort came to his ears.

He stepped inside courageously and slipped with his back to the wall, where he waited, holding his breath.
Click! It seemed to come from his right.
"Come out o' that!" he snarled.

"No monkey-business, or I'll shoot." He flashed his pocket-lamp toward the sound, and aimed.
A blow on the side of the head sent the detective crashing against a cartonnage, and together the quick and the dead rolled to the floor.
Instinctively Haggerty turned on his back, aimed at the window and fired.
Too late!.