Here I may mention a fact which I had not discovered at first. Whenever he was interested in a case I was always taken into his empty room; at other times we were in the dining-room or the drawing-room. It was the empty room on this occasion, and Zena remained with us.
I went carefully through the case point by point, and he made no comment until I had finished.
"The foreign cut of the clothes may be of importance," he said. "I am not sure. Is this wood you mention of any great extent?"
"No, it runs beside the road for two or three hundred yards."
"Toward Withan?"
"No; it was near the Withan end of it that the dead man was found."
"Any traces that the head was carried to the wood?"
"The local authorities say, 'Yes,' and not a trace afterward. The ground in the wood was searched at the time, and I have been over it carefully since. Through one part of the wood there runs a ditch, which is continued as a division between two fields which form part of the farm land behind the wood. By walking along this the murderer might have left the wood without leaving tracks behind him."
"A good point, Wigan. And where would that ditch lead him?"
"Eventually to the high road, which runs almost at right angles to the Withan road."