“I am to remain on watch, then?” said I, ruefully.

“We will divide the night.  If you will watch until two, I will watch the remainder.”

“Very good.”

“Call me at two o’clock, then.”

“I will do so.”

“Keep your ears open, and if you hear any sounds wake me instantly—­instantly, you hear?”

“You can rely upon it.”  I tried to look as solemn as he did.

“And for God’s sake don’t go to sleep,” said he, and so, taking off only his coat, he threw the coverlet over him and settled down for the night.

It was a melancholy vigil, and made more so by my own sense of its folly.  Supposing that by any chance Lord Linchmere had cause to suspect that he was subject to danger in the house of Sir Thomas Rossiter, why on earth could he not lock his door and so protect himself?” His own answer that he might wish to be attacked was absurd.  Why should he possibly wish to be attacked?  And who would wish to attack him?  Clearly, Lord Linchmere was suffering from some singular delusion, and the result was that on an imbecile pretext I was to be deprived of my night’s rest.  Still, however absurd, I was determined to carry out his injunctions to the letter as long as I was in his employment.  I sat, therefore, beside the empty fireplace, and listened to a sonorous chiming clock somewhere down the passage which gurgled and struck every quarter of an hour.  It was an endless vigil.  Save for that single clock, an absolute silence reigned throughout the great house.  A small lamp stood on the table at my elbow, throwing a circle of light round my chair, but leaving the corners of the room draped in shadow.  On the bed Lord Linchmere was breathing peacefully.  I envied him his quiet sleep, and again and again my own eyelids drooped, but every time my sense of duty came to my help, and I sat up, rubbing my eyes and pinching myself with a determination to see my irrational watch to an end.

And I did so.  From down the passage came the chimes of two o’clock, and I laid my hand upon the shoulder of the sleeper.  Instantly he was sitting up, with an expression of the keenest interest upon his face.

“You have heard something?”

“No, sir.  It is two o’clock.”

“Very good.  I will watch.  You can go to sleep.”

I lay down under the coverlet as he had done and was soon unconscious.  My last recollection was of that circle of lamplight, and of the small, hunched-up figure and strained, anxious face of Lord Linchmere in the centre of it.

How long I slept I do not know; but I was suddenly aroused by a sharp tug at my sleeve.  The room was in darkness, but a hot smell of oil told me that the lamp had only that instant been extinguished.

“Quick!  Quick!” said Lord Linchmere’s voice in my ear.

I sprang out of bed, he still dragging at my arm.

“Over here!” he whispered, and pulled me into a corner of the room.  “Hush!  Listen!”