explain to the reader how much strength it required to drive the bolt in
about an inch and a half.

Then we satisfied ourselves that the bolt could not be moved without the
aid of a hammer and a lever. Afterwards we closed the window and the
other door and securely locked the last. Thus no human being could open
the haunted door.

Before retiring to bed after dinner we further examined both the doors
once more. They were all right.

The next morning we did not go out for fishing; so when we got up at
about five in the morning the first thing we did was to go and examine
the haunted door. It flew in at the touch. We then went inside and
examined the other door and the window which communicated with the
court-yard. The window was as secure as we had left it and the door was
chained from outside. We went round into the court-yard and examined the
lock. It did not appear to have been tampered with.

The old man and his wife met us at tea as usual. They had evidently been
told everything. They, however, did not mention the subject, neither did
we.

It was my intention to pass a night in that room but nobody would agree
to bear me company, and I did not quite like the idea of passing a whole
night in that ugly room. Moreover my hosts would not have heard of it.

The mystery of the open door has not yet been solved. It was about 20
years ago that what I have narrated above, happened. I am not sure that
the mystery will ever be solved.