Toward morning the crowd thinned. The street grew more quiet, although the very air still throbbed with action, even as the heart-strokes within us. Quickly as events had come, we were yet only in the midst of our experiences.
The clock in the Chief's room was striking three, and drowsiness was stealing over me, as over the outside world, when a knock came at the front door and Hallen admitted a man, weary-eyed and panting. I recognized him as one of the men who had been masquerading about the Mansion as a carpenter. He was dressed in a heavy jersey without a coat, and was evidently suffering from fatigue.
He walked over to Oakes and spoke to him in a low voice. The detective asked a question or two, and turning looked at Dr. Moore, asleep in a chair, fagged out, then at me. I was wide awake, anticipating more trouble. "Stone," said he, "are you good for a ride with me on horseback? We have found something important."
"Yes," I answered, "I am ready."
Speaking a word to Hallen and Martin, Oakes drew me aside. "Leave your overcoat. Come, we are needed."
We passed out into the night and down a side street, led by the man who had summoned us. In a few minutes we reached a stable and found horses, and I knew that it had been so arranged. We were mounted and off without notice from any but an hostler and the proprietor, who had told me that my horse was strong and capable.
We pounded to the east, along the Highway, toward Lorona, for a mile or so, then swerved into a narrow road winding across the plateau to the south and west. I knew we were making for the River Road below the Mansion. I had heard of this lane, which swept in a long curve around the southern end of Mona, connecting the Highway with River Road about two miles south of the Mansion gate.
As we galloped along, Oakes communicated to me the cause of our trip.
"Two of my men have located a hut deep in the forest at the south end of the Mansion grounds. There is something going on there. They think they have the murderer. One of the men came for me; the other is watching."