foot, and particularly examining the two tombs.

"At the end of this search, I had in a ladder, and made a close survey of
the groined roof. I passed three days in this fashion, and by the evening
of the third day I had proved to my entire satisfaction that there is no
place in the whole of that Chapel where any living being could have
hidden, and also that the only way of ingress and egress to and from the
Chapel is through the doorway which leads into the castle, the door of
which was always kept locked, and the key kept by Sir Alfred Jarnock
himself, as I have told you. I mean, of course, that this doorway is the
only entrance practicable to material people.

"Yes, as you will see, even had I discovered some other opening, secret
or otherwise, it would not have helped at all to explain the mystery of
the incredible attack, in a normal fashion. For the butler, as you know,
was struck in full sight of the Rector, Sir Jarnock and his son. And old
Bellett himself knew that no living person had touched him.... _'Out of
the Void,'_ the Rector had described the inhumanly brutal attack. 'Out of
the Void!' A strange feeling it gives one--eh?

"And this is the thing that I had been called in to bottom!

"After considerable thought, I decided on a plan of action. I proposed to
Sir Alfred Jarnock that I should spend a night in the Chapel, and keep a
constant watch upon the dagger. But to this, the old knight--a little,
wizened, nervous man--would not listen for a moment. He, at least, I felt
assured had no doubt of the reality of some dangerous supernatural Force
a roam at night in the Chapel. He informed me that it had been his habit
every evening to lock the Chapel door, so that no one might foolishly or
heedlessly run the risk of any peril that it might hold at night, and