It was by this time about half-past six o'clock in the evening, and it was still light and warm, though the shadows were long about the old house. I had done a deal of waiting that day, and it had begun to tell on me. It was a great relief when Leah appeared, looking about anxiously. I came out from hiding.

"How goes it!" I asked.

"All right, but she's been restless and fretful. I shouldn't have been able to get off possibly, if she hadn't decided to take a walk before supper. She's gone up over the hill. What are you going to do, Mr. Castle?"

I handed her the bottle, and as she caught sight of the label her hand shook so that she nearly dropped it.

"What we'll have to do is to put her to sleep, so that Joy may return. I don't know, of course, whether it will work or not, but it's the only way I can think of. Have the bottle ready, hidden in the library, and wait till she sits down to supper. Then go in quickly, soak your handkerchief with the chloroform, come up behind her, and hold it to her face tightly—with all your strength, for she'll struggle—till her head drops. You must act quickly and firmly. If she has the slightest suspicion of anything, you'll fail, and we're lost. As soon as you've laid her on the floor, call me. I'll be right outside, ready to come in."

"But King?" she asked, trying hard to control her excitement.

"If King sees you, or attempts to interfere, tell him that I am trying to drive out Miss Fielding's devil. But he won't, I think. Is Uncle Jerdon there?"

"No, he's gone after the cow—he won't come into the kitchen till after seven o'clock, when he's through with his milking."

"Very well, then. Can you do it? Have you the nerve?"

"Yes. I'll do anything to bring back Miss Joy!"