Chapter 12
Margaret did not raise her voice. That was what made it land so hard. She spoke the way people speak when they are telling you about a gas leak in your own house β quietly, because shouting will not change the physics of it.
"If that compressor loses pressure," she said, "the cellar vents. Not out. Not up through some chimney where the wind can take it. Down. Into the gravel beneath your foundation. The loop is a closed circuit, Mr. Grant, and your house is the other end of it."
I felt the blood leave my face. "What do you mean, the other end?"
"I mean the lines don't stop at my cellar wall." She gestured toward my house with a tilt of her head, the way you point at something you have already accepted as ruined. "They run under the fence, under your side yard, and into the gravel bed beneath your foundation. That's how Edwin built it. The loop needs a low point to breathe into, and your crawl space is the low point. So if the pressure drops β if that compressor stops, if someone bleeds the manifold, if someone gets clever with a wrench β whatever Edwin stored down there in November vents straight into your crawl space."
The November reference stopped me cold. November was when the town depot burned. November was when the medical examiner's office filed its missing evidence report. November was when Aaron vanished β four nights before the fire, gone from the county roads department without a word, without a note, without a trace that seven months of searching had ever turned up.
"What did Edwin store down there?" I asked. My voice sounded strange to me, flat and far away, like it was coming from the bottom of a well.
Margaret looked at the root cellar doors, and for a moment I thought she might actually answer. Her mouth opened. Her eyes went to the gauge, to the hoses, to the ground between our two houses where the loop ran invisible under the grass. Then she closed her mouth again, and the look she gave me was almost pitying.
"Something that was never supposed to come back up," she said. "Something Edwin put down there the week the depot burned, because there was nowhere else left to put it. And for five months, that compressor has been the only thing keeping it where it belongs."
Five months. The same five months since Edwin Hale had supposedly been lying in a care wing fifteen miles east, bedridden, out of the picture. The same five months since a man had died, supposedly, of a heart attack β or a stroke β in the back of a sedan. The numbers were stacking up in my head now, and every one of them pointed at the same hole in the ground.
Callahan shifted his weight. "Margaret, you are scaring a civilian with speculation."
"Am I?" she said. "Then you explain it, Tom. You explain why the loop runs under his foundation. You explain why his power meter spins when my compressor kicks on. You explain why a man who bought a house for fifty-five cents on the dollar has been breathing loop air through his floorboards for seven months without knowing it."
I thought about the nights I had lain awake listening to the walls hum. I thought about the mornings I had woken up with a headache I blamed on the new mattress, the new town, the new life. I thought about the crawl space hatch in my hallway closet, the one I had never opened because the previous owner had painted it shut β or so I had assumed. Maybe it had not been painted shut at all. Maybe it had been sealed.
"My crawl space," I said slowly. "The hatch. It's been vibrating. At night. I thought it was the furnace."
Margaret nodded once, a small, terrible confirmation. "That's the loop breathing, Mr. Grant. Every time the compressor cycles, your hatch feels it. Your house has been part of this machine since the day you signed the papers. You just didn't know you were buying into it."
I looked down at the dirt between my boots, at the line of disturbed earth where my post holes ran, at the survey pin sitting four inches inside her boundary. I had come out here this morning to build a fence. I had thought the fence was the problem. Now I understood that the fence was the only honest thing in this yard β a straight line drawn over a machine that had been running under both our houses for months, waiting for someone to dig deep enough to find it.
And I had dug deep enough.