`He must have been holding it as a signal,' said I. `Let us see if there is any answer.' I held it as he had done, and stared out into the darkness of the night. Vaguely I could discern the black bank of the trees and the lighter expanse of the moor, for the moon was behind the clouds. And then I gave a cry of exultation, for a tiny pin-point of yellow light had suddenly transfixed the dark veil, and glowed steadily in the centre of the black square framed by the window.

`There it is!' I cried.

`No, no, sir, it is nothing - nothing at all!' the butler broke in; `I assure you, sir - '

`Move your light across the window, Watson!' cried the baronet. `See, the other moves also! Now, you rascal, do you deny that it is a signal? Come, speak up! Who is your confederate out yonder, and what is this conspiracy that is going on?'

The man's face became openly defiant.

`It is my business, and not yours. I will not tell.'

`Then you leave my employment right away.'

`Very good, sir. If I must I must.'

`And you go in disgrace. By thunder, you may well be ashamed of yourself. Your family has lived with mine for over a hundred years under this roof, and here I find you deep in some dark plot against me.'

`No, no, sir; no, not against you!' It was a woman's voice, and Mrs. Barrymore, paler and more horror- struck than her husband, was standing at the door. Her bulky figure in a shawl and skirt might have been comic were it not for the intensity of feeling upon her face.

`We have to go, Eliza. This is the end of it. You can pack our things,' said the butler.

`Oh, John, John, have I brought you to this? It is my doing, Sir Henry - all mine. He has done nothing except for my sake and because I asked him.'

`Speak out, then! What does it mean?'

`My unhappy brother is starving on the moor. We cannot let him perish at our very gates. The light is a signal to him that food is ready for him, and his light out yonder is to show the spot to which to bring it.'

`Then your brother is - '

`The escaped convict, sir - Selden, the criminal.'

`That's the truth, sir,' said Barrymore. `I said that it was not my secret and that I could not tell it to you. But now you have heard it, and you will see that if there was a plot it was not against you.'

This, then, was the explanation of the stealthy expeditions at night and the light at the window. Sir Henry and I both stared at the woman in amazement. Was it possible that this stolidly respectable person was of the same blood as one of the most notorious criminals in the country?

`Yes, sir, my name was Selden, and he is my younger brother. We humoured him too much when he was a lad and gave him his own way in everything until he came to think that the world was made for his pleasure, and that he could do what he liked in it. Then as he grew older he met wicked companions, and the devil entered into him until he broke my mother's heart and dragged our name in the dirt. From crime to crime he sank lower and lower until it is only the mercy of God which has snatched him from the scaffold; but to me, sir, he was always the little curly-headed boy that I had nursed and played with