The Siamese, attracted by the heat from the burning logs or the stale aroma of the documents, were in close attendance, and Koko was particularly interested in a folded sheet of paper that had been handled by dirty hands. It was a rough diagram with measurements and other specifications noted in faded penciling that Qwilleran could not decipher even with his reading glasses. Using a magnifying glass from the telephone desk he was able to identify the central element as a half-circle with dimensions given in feet. Two rectangles connected by a pair of parallel lines were marked SW and NW, but no dimensions were specified. Folded in with the diagram was a misspelled bill from the Mayfus Stone Quarry on Sandpit Road: "4 lodes stone to pave carage house." The date was May 16, 1904, and it was marked "pd."
"Three days after the explosion!" Qwilleran observed. "What do you two sleuths make of that? The carriage house is not paved; it's plank like the threshing floor. And what's this?"
Folded in with the diagram was a small slip of paper in Ephraim Goodwinter's unmistakable hand:
Rec'd of Ephraim Goodwinter the sum of one thousand dollars ($1,000) in consideration of which the undersigned agrees to do stonework as specified, privately and without help and without revealing same to any living soul, work to be completed by August 15 of the current year. Signed and accepted this day of May 16, 1904.
Luther Bosworth X (his mark)
"Luther couldn't even write his name!" Qwilleran exclaimed. "How do you like that?"
Hearing no reply he looked for the cats. Yum Yum was asleep on the hearth rug with her tail curled comfortingly over her nose. A hump in one of the other Orientals indicated that Koko was in hiding again. In consternation Qwilleran went to the telephone and called a number in Mooseville.
"Hello, Lori. This is Qwill," he said.
"How's everything?... Glad to hear it. How's the baby?... Are you sure he isn't eating the cats' food?... Speaking of cats, I'm sorry to trouble you again, but I'd like to ask you a question about Koko's latest aberration. He's accustomed to wall-to-wall carpet in our Pickax apartment, you know, but here we have bare wood floors scattered with small rugs, and he's always hiding under them - something he's never done before... Well, there are different kinds: Orientals in the parlor and entrance hall, hooked rugs in the bedroom, braided rugs in the kitchen and dining area - all old and handmade. Koko prefers the Orientals, which are the thinnest and the most valuable. He's always been a snob... No, he tunnels under them in a neat, workmanlike way, making a hump in the rug. Wait a minute! Excuse me, Lori. I just got an idea! I'll call you back."
Qwilleran hung up, tamping his moustache with fervor. He grabbed a flashlight, rushed out to the barn, barged through the eye of the needle, frightening a barncat, plunged down the ladder into the stable, flashed his light into the southwest comer. There he found another wooden palette like the one on the threshing floor above. This one also leaned against the wall, but it was surrounded by rubble. When he pulled it aside he was gaping at a hole in the foot-thick stone wall. The opening was about four feet wide and three feet high, an arched tunnel of crumbling masonry with a floor of hard-packed clay. The arch was roughly mortared quarry stone. As far as the beam of the flashlight penetrated there was arched stone.
Qwilleran dropped to his knees and started to crawl. This was Ephraim's escape tunnel, he realized, evidently planned when public outcry alarmed him. The bill for the stone was dated three days after the explosion - the same day that Luther signed his X and agreed to build the tunnel secretly while the family traveled abroad.
Had Ephraim actually used this escape hatch on the night of October 29? It was quite possible. Qwilleran imagined furious hordes shouting obscenities in front of the farmhouse and throwing rocks at the windows, while Ephraim craftily crawled through the tunnel. No doubt, the trusted Bosworth had a horse ready - two horses, one for Ephraim's son - the saddlebags packed with valuables. Under cover of darkness the pair would ride along the Willoway, heading for Mooseville, where Ephraim would board a passenger boat to Canada across the lake. His wife, meanwhile, was taking refuge at the parsonage with Mr. and Mrs. Crawbanks. A deal had already been made with Enoch Dingleberry, and Ephraim's sons would carry out the remainder of the charade: killing Luther, who knew too much, then blaming the horse; staging the hanging with a hastily rigged effigy; announcing the suicide and producing the suicide note; mourning at their father's funeral. Little did they know that the rumor mill would go into operation, with their enemies taking credit for Ephraim's demise. What started the rumor, of course, was Mr. Crawbanks' discovery of the white sheet, recently left there by some Halloween prankster.