"I must have been a dolt not to have noticed it before," Gurdon said. "Now that you mention it, the likeness is plain enough. My dear fellow, can't you see in this a reason for your wife's reticence in speaking of the past?"

There was no time to reply, for the sinister evil face of Fenwick appeared in the doorway, and he called aloud in Spanish some hoarse command, which was answered from above by someone, in the same language. Gurdon whispered to his companion, with a view to ascertaining what had been said.

"You will see for yourself in a minute," Venner said in an excited whisper. "You are going to have another surprise. You wanted to know just now what had become of Bates. Unless I am greatly mistaken, you will be able to judge for yourself in a few moments. I believe the man to be a prisoner in his own house."

CHAPTER XIII

THE WHITE LADY AGAIN

It was perhaps an imprudent thing for the two friends to remain there, exposed as they were to the danger of discovery at any moment; but, so completely were they fascinated by what was going on about them, that they had flung caution to the winds. One thing was in their favor, however; there was not much likelihood of their being attacked from below, seeing that all the servants had gone to bed; unless, perhaps, some late comer entered the house. Still, the risk had to be run, and so they stood there together, waiting for the next move. It was Venner who spoke first.

"I cannot get over the extraordinary likeness of that girl to my wife," he said. "Is she anything like the woman you saw next door? I mean the poor half-demented creature who happened to come into the room when you were talking with the owner?"

"Why, of course, it is the same girl," Gurdon replied.

"Then I am sure she is Vera's sister. I'll ask her about it the first time I have an opportunity. Be silent and get a little lower down the stairs. There is somebody coming from the top of the house. We can see here without being seen."

Assuredly there were sounds emanating from the top of the house. A voice was raised in angry expostulation, followed by other voices morose and threatening. As far as the listeners could judge, two men were dragging a third down the stairs against his will. But for that, the house was deadly silent; the watchers could hear the jingle of a passing cab bell, a belated foot passenger whistled as he went along. It seemed almost impossible to believe that so close to light and law and order and the well-being of the town a strange tragedy like this should be in progress; hidden from the eye of London, by mere skill of brick and mortar, this strange thing was going on. Venner wondered to himself how many such scenes were taking place in London at the same moment.