He led his companion to a corner of the Market-Place, and down a narrow alley which terminated on an expanse of open ground at the side of the river. There he made her pause and look round. "Now if we're going to do the thing properly," he said, "just attend, and take notice of what I point out. The town, as you see, stands on this ridge above us. Here we are at the foot of the gardens and orchards which slope down from the backs of the houses on this side of the Market-Place. There is the gate of the bank-house orchard. According to Mrs. Carswell, Mr. Horbury came out of that gate on Saturday night. What did he do then? He could have turned to the left, along this river bank, or to the right, also along the river bank. But, if he meant to walk out to Ellersdeane--which he would reach in well under an hour--he would cross this foot-bridge and enter those woods. That's what we've got to do." He led his companion across a narrow bridge, over a strip of sward at the other side of the river, and into a grove of fir which presently deepened and thickened as it spread up a gently shelving hillside. The lights of the town behind them disappeared; the gloom increased; presently they were alternately crossing patches of moonlight and plunging into expanses of blackness. And Betty, after stumbling over one or two of the half-exposed roots which lay across the rough path, slipped a hand into Neale's arm. "You'll have to play guide, Wallie, unless you wish me to break my neck," she laughed. "My town eyes aren't accustomed to these depths of gloom and solitude. And now," she went on, as Neale led her confidently forward through the wood, "let's talk some business. I want to know about those two--the Chestermarkes. For I've an uneasy feeling that there's more in this affair than's on the surface, and I want to know all about the people I'm dealing with. Just remember--beyond the mere fact of their existence and having seen them once or twice, years ago, I don't know anything about them. What sort of men are they--as individuals?"