"Why?"

"Because of the mystery surrounding that man Boyne," he said.

"Marigold ten days ago said that she didn't believe that Mr. Boyne was as honest and sincere as people believed, but really, I have never taken any notice of her suspicions. We all of us suspect one of our friends."

"Marigold spoke the truth! I agree entirely with her. There are certain facts—facts which I have established—which show that this man Boyne—most modest of men—is an adventurer of a new and very extraordinary type. He is engaged in some game that is very sly, and by which he somehow enriches himself by very considerable sums."

Gerald Durrant an hour later went up to Waterloo and on to Hammersmith, where in the evening he stood before the boarded-up ruins of the fire. He saw that the top floor had been destroyed.

"So the secret of that top room has been wiped out," he remarked to himself. "Why? Did Boyne suspect us of prying? If he did, then what more likely than he should put his slow, but far-reaching, fingers upon us both. That I should have been drugged and placed on board a ship bound for the other side of the world, and branded as a semi-lunatic, is only what one might expect of such a master-brain!"

At a public-house in King Street, a few doors from the end of Bridge Place, he got into conversation with the landlord, who told him of the events of that night when the house caught fire.

"It's an awful thing for poor old Boyne," he added. "Although he is an insurance agent, it seems that, though he insured other people, he never insured himself. So he's ruined—so he told Mr. Dale, the corndealer in Chiswick High Road, a week ago."

Gerald smiled but said nothing. His thoughts were upon the hooded recluse who lived on the top floor of that dingy house. What could have been the real secret of that obscure abode?

A few other inquiries led him to the sombre house with smoke-grimed curtains where deaf old Mrs. Felmore had taken refuge, a few doors from the smoke-blackened, half-destroyed house.