Mystery still hung over the house of Eben Tollman an hour or two later, but the two figures that had sat with the quietness of unaccomplished death were again sensate and restored to full consciousness.

Conscience had been able to go to her own room, and Stuart, now dressed, came slowly and as yet somewhat haltingly down the stairs, holding carefully to the rail. He was setting out to search for Eben Tollman, and to call in medical help. But in the hall he paused, and then, turning on impulse, went slowly into the living-room.

There he stood looking about as a man who has dropped from his own planet to one wholly unfamiliar may seek to take his bearings.

His eyes fell as he paused on two patches of white which showed against the dark richness of the rugs and laboriously he picked them up. One was a yellow envelope inscribed "S. F. & C. W."

As a sudden blow may bring back a lost identity to the victim of amnesia the discovery electrified the man and he straightened into an abrupt erectness. His features lost their sleep-walking indefiniteness and his jaw stiffened.

As the significance of his discovery dawned on him, a pallor quite separate from that of his condition came over his face and a murder light broke in his eyes. He would go on with his search for Eben, but when he found him now—! He wheeled suddenly and began looking at the table, and across the confused screen of his brain flashed a complete picture and an understanding.

Then he studied the other and smaller envelope—and recognized it as the one which Dr. Ebbett had given Eben Tollman when they talked of a merciful release for the dog that had outlived his enjoyment of life.

"I don't believe I'll ever find him—alive," he said very slowly, under his breath; "I think I understand."

Then after a moment of grave reflection he added: