assistant field overseer. Impossible to suspect either, let alone both."

"Wouldn't they knock off for dinner at noon? Go to their cabins, I mean."

"Ordinarily, yes. But on Tuesday Mandy, Zack's wife, went to Calverton, and didn't return until late in the evening, or afternoon, as you would say. Accordingly she made up pail dinners for both Zack and Zeb, the latter[Pg 67] being a boarder in their family. The men ate their food in the shadow of the osage hedge directly opposite the terrace; Effingham saw them and told me so."

[Pg 67]

"You seem to have covered the ground pretty thoroughly," I observed approvingly.

"And for good reasons, too," remarked the doctor. "For if I really believed the circumstances warranted the step it would be my duty to communicate my suspicions to the coroner."

"Then you haven't done so!" I was surprised and doubtless my voice showed it.

"No," assented Marcy deliberately. "In the first place I was determined to keep every

[Note: There was a misprint here in the book. Instead of the end of this paragraph, the preceding paragraph was duplicated.]

I started; I fancied that I had caught just the faintest suggestion of a sigh. Let me explain that the great room was in darkness except for the circle of yellow light cast by the shaded lamp that stood on a table at my right. I listened intently, but I could hear nothing more.[Pg 68]

[Pg 68]

Chapter V

 The Missing Link

"I beg your pardon," repeated Doctor Marcy, looking at me uncertainly.

"I should beg yours, doctor," I answered as easily as I could. Some sixth sense had made me aware that Betty Graeme was standing in the shadow behind me. She must have heard more than enough already, and now she would demand the whole truth. Assuredly I must protect her in her evident desire to remain unnoticed.

"I didn't mean to interrupt," I continued, "but my cigarette was burning my fingers—too much interested, you see."

"Secondly, then," went on Doctor Marcy, "I have found 

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