This impelled me to go forward, till I reached the foot of a staircase.

A candle stood upon the lowest step.
This was a new proof that the house was not deserted.

I struck my heel against the floor with some violence; but this, like my former signals, was unnoticed.

Having proceeded thus far, it would have been absurd to retire with my purpose uneffected.

Taking the candle in my hand, I opened a door that was near.