"Hark!" Close at hand came the howling of many wolves.

It was almost as if the sound sprang up at the rising of his hand, just as the music of a great orchestra seems to leap under the baton of the conductor.

After a pause of a moment, he proceeded, in his stately way, to the door, drew back the ponderous bolts, unhooked the heavy chains, and began to draw it open.
To my intense astonishment I saw that it was unlocked.

Suspiciously, I looked all round, but could see no key of any kind.
As the door began to open, the howling of the wolves without grew louder and angrier.

Their red jaws, with champing teeth, and their blunt-clawed feet as they leaped, came in through the opening door.