One of these was bolted.

I unfastened it and found a considerable space within.
Should I immure myself in this closet?
I saw no benefit that would finally result from it.

I discovered that there was a bolt on the inside, which would somewhat contribute to security.

This being drawn, no one could enter without breaking the door.
I had scarcely paused, when the long-expected sound of footsteps was heard in the entry.

Was it my companion, or a stranger?
If it were the latter, I had not yet mustered courage sufficient to meet him.