Prologue

I

Soon after sunrise, on a cloudy morning in the year 1881, a special
messenger disturbed the repose of Dennis Howmore, at his place of
residence in the pleasant Irish town of Ardoon.

Well acquainted apparently with the way upstairs, the man thumped on a
bed-room door, and shouted his message through it: "The master wants
you, and mind you don't keep him waiting."

The person sending this peremptory message was Sir Giles Mountjoy of
Ardoon, knight and banker. The person receiving the message was Sir
Giles's head clerk. As a matter of course, Dennis Howmore dressed
himself at full speed, and hastened to his employer's private house on
the outskirts of the town.

He found Sir Giles in an irritable and anxious state of mind. A letter
lay open on the banker's bed, his night-cap was crumpled crookedly on
his head, he was in too great a hurry to remember the claims of
politeness, when the clerk said "Good morning."

"Dennis, I have got something for you to do. It must be kept a secret,
and it allows of no delay."

"Is it anything connected with business, sir?"

The banker lost his temper. "How can you be such an infernal fool as to
suppose that anything connected with business could happen at this time
in the morning? Do you know the first milestone on the road to Garvan?"

"Yes, sir."

"Very well. Go to the milestone, and take care that nobody sees you
when you get there. Look at the back of the stone. If you discover an
Object which appears to have been left in that situation on the ground,
bring it to me; and don't forget that the most impatient man in all
Ireland is waiting for you."

Not a word of explanation followed these extraordinary instructions.

The head clerk set forth on his errand, with his mind dwelling on the
national tendencies to conspiracy and assassination. His employer was
not a popular person. Sir Giles had paid rent when he owed it; and,
worse still, was disposed to remember in a friendly spirit what England
had done for Ireland, in the course of the last fifty years. If
anything appeared to justify distrust of the mysterious Object of which
he was in search, Dennis resolved to be vigilantly on the look-out for
a gun-barrel, whenever he passed a hedge on his return journey to the
town.

Arrived at the milestone, he discovered on the ground behind it one
Object only--a fragment of a broken tea-cup.

Naturally enough, Dennis hesitated. It seemed to be impossible that the
earnest and careful instructions which he had received could relate to
such a trifle as this. At the same time, he was acting under orders
which were as positive as tone, manner, and