thoroughly--or not at all."

"That's why you clean your own gun, I suppose?"

"That's why, when there's any danger, I take as few chances as
possible," he said, with the same enigmatical smile I had noticed
before; and then he added with emphasis, "And that is also why I ask you
to keep me company now."

Of course, the shaft went straight home, and I gave my promise without
further ado.

Our preparations for the night--a couple of rugs and a flask of black
coffee--were not elaborate, and we found no difficulty, about ten
o'clock, in absenting ourselves from the billiard-room without
attracting curiosity. Shorthouse met me by arrangement under the cedar
on the back lawn, and I at once realised with vividness what a
difference there is between making plans in the daytime and carrying
them out in the dark. One's common-sense--at least in matters of this
sort--is reduced to a minimum, and imagination with all her attendant
sprites usurps the place of judgment. Two and two no longer make
four--they make a mystery, and the mystery loses no time in growing into
a menace. In this particular case, however, my imagination did not find
wings very readily, for I knew that my companion was the most
_unmovable_ of men--an unemotional, solid block of a man who would
never lose his head, and in any conceivable state of affairs would
always take the right as well as the strong course. So my faith in the
man gave me a false courage that was nevertheless very consoling, and I
looked forward to the night's adventure with a genuine appetite.