Captain Francis Newcombe was halfway along the hall now. His mind, despite the fury that from smouldering rage had broken into flaming heat, was logical, measured, precise. That telephone message could have come from nowhere else but from the boathouse. That was self-evident. If Runnells, then, was at the bottom of this, the question now was whether Runnells had got back to his room yet or not? And, if he were back, how long he had been back?—the man must be allowed to undress and get into bed. To discover Runnells fully dressed at this hour was to force the issue then and there in Runnells' room; for Runnells, caught like that, while he might be voluble with explanations, would of necessity at the same time be thrown instantly upon his guard, and would not be fool enough to be enticed into any trap, no matter how apparently genuine the pretence of accepting his explanations might be made to appear.

Captain Francis Newcombe was at the door now listening. Runnells would have had time by now to have got to bed; certainly there was no sound from within, and— He drew back from the door suddenly, but as silently as a shadow. There was no sound from within, but some one was creeping, though with every attempt at silence, up the staircase. Captain Francis Newcombe retreated still a little farther back along the hall, and, with body hugged now close against the wall, waited in the darkness. He could see nothing—not even across the hall; and, therefore, he was quite secure from being observed himself, but his hand, in his pocket now, was closed over the butt of his revolver.

The sounds were very faint, but they were equally unmistakable—now the muffled, protesting creak of a stair tread; now that sound, like no other sound so much as the padded footfall of an animal, as weight was cautiously placed on the carpeted stairs. The footsteps came nearer and nearer to the upper landing, slow, laborious in their caution and stealth. And then another sound—equally faint and equally unmistakable—the opening and closing of the door at the head of the stairs.

Captain Francis Newcombe relaxed. His lips twisted into a smile of malignant satisfaction.

Runnells!

So it was Runnells who had indulged in that little telephone conversation; Runnells, the pitiful, foolhardy moth—and the flame! Runnells, instead of being already in bed, was just getting back. So much the better—it would tax Runnells' ingenuity a little beyond its limitations to explain this unseemly hour! It made it perhaps just a little easier to handle and break the man.

Captain Francis Newcombe moved silently back again to the door of Runnells' room, and again listened at the panels. The sound of movement from within was distinctly audible. Runnells was preparing to go to bed.

The minutes passed—five—ten of them. It was quiet inside the room now. And then Captain Francis Newcombe knocked softly with his knuckles on the door—two raps in quick succession, then a single one followed by two more.

There was a sound almost on the instant as of the sudden creaking of the bed, and then the hurry of feet across the floor to the door. Then silence again. Captain Francis Newcombe smiled thinly to himself. Runnells was caution itself. He repeated the knocks precisely as before.

The door opened. Runnells showed as a white, vague figure in his night clothes.