Doc Silent Blinds

Four minutes, five, Doc bored into the night with the binoculars. He peered into every office window within range, and there were hundreds. He scrutinized the spidery framework of the observation tower atop the skyscraper under construction. Darkness packed the labyrinth of girders, and he could discern no trace of the bushwhacker.

"He's gone!" Doc concluded aloud.

No sound of movement followed his words. Then the window shade ran down loudly in the room where they had been shot at. The five men stiffened, then relaxed at Doc's low call, Doc had moved soundlessly to the shade and drawn it.

Doc was beside the safe, the lights turned on, when they entered.

- The Man of Bronze (1933) Chapter 3