ad recourse to a couch, under which he searched for a trapdoor,
but found none; and then his attention was attracted to an iron safe,
not quite so high as his head, which stood in one corner of the room.

An iron safe is not a thing which is easily moved from its position, but
Nick seized upon it, nevertheless; nor was he surprised when he found
that it was so perfectly balanced on the wheels that supported it that
it moved readily enough in response to his efforts.

And behind it was the door he sought. It was not over three feet high,
and thirty inches in width, but there was a latch upon it, mortised into
the wood, and there was a hole in the door, through which was passed a
small steel chain that was attached to a rung fastened to the iron safe.
This, of course, was intended to use for pulling the safe back into
position after the door had been made use of, and the fugitive, whoever
he might be, had made his escape.

Nick pulled open the door, thus making it ready for his use, and then
quickly returned to Black Madge's side. He raised her in his arms,
carried her to the little door, and, having unceremoniously thrust her
headfirst through it, crawled after her, closed the door, and pulled the
safe into place again with the aid of the chain.

He found himself now in a narrow corridor, faced by rough bricks on
either side of him, evidently constructed between the party walls of the
two buildings, and ten feet in front of him he perceived a flight of
steps leading downward.

Again picking Madge up in his arms, he hurried down the narrow stairs to
the bottom, and there came upon an iron door, fastened with a spring
lock on the inside, which he therefore easily opened.

Passing through this, and closing it behind him, so that the lock
snapped again, he found himself in the cellar beneath the building that
adjoined the one in which Mike Grinnel's dive was located. Across the
cellar, and at the far end of it, was a flight of wooden stairs.

Nick regretted at that moment that he did not remember what sort of a
place was located next to Grinnel's, but he realized the imperative
necessity of getting out of the building into the street as quickly as
possible, no matter how he accomplished it, and therefore, when he
carried his captive up those stairs to the top of them, and found there
only an ordinary wooden door locked against him, he lost no time in
kicking it open, and passing through.

When he did so, and when he