At seven fourteen on a Saturday morning, I found Grace Thornton standing on my roof with a can of red spray paint.
I had woken a minute earlier to a dry scraping sound above the bedroom ceiling. It dragged across the plaster like a branch in wind, but there was no wind, and no branch on my side of the street reached the roof. I sat up and looked out the upstairs window. That was when I saw her: seventy-one years old, in a flannel shirt and gardening gloves, balanced on the lower slope of my roof with a bright red can in her right hand.
She aimed it at the first solar panel and covered the dark glass with thick red streaks.
I yanked the window open so hard the frame banged the wall. "Grace!"
She looked down at me. She was not hurried. She was not embarrassed. If anything, she looked relieved, the way someone looks when they have finally stopped arguing with themselves.
"I did the other three times too," she said.
My name is Daniel Mercer. The panels were mine. Twelve of them, installed two years ago by SunHarvest Energy, bolted across the south face of my roof. For nearly two months someone had been wrecking them, and now the answer was standing in front of me in broad daylight with paint on her knuckles.
"Grace, get down!"
She shook the can. The little metal ball rattled inside. She sprayed another panel, slow and even, left to right, the way she painted her fence boards every spring.
"Call the police first," she said.
"What?"
"Call them before you climb this ladder."
Behind me, in the hallway, I heard my daughter's bedroom door open. Mia, seventeen, came to the door in a sweatshirt and socks, her hair still flat on one side from sleep.
"Dad? What is that noise?"
"Nothing," I said, too fast. "Go back inside."
She stepped to the window behind me and saw Grace. Her mouth opened, and nothing came out for a second.
"Is that Mrs. Thornton? On our roof?"
"I know what it looks like."
"It looks like she's painting the solar panels red."
I turned back to the window. Grace had moved to the third panel. The red was spreading across the glass in a clean, deliberate coat, and under the paint I could still see the dark blue cells of the panel grid, drowning.
"You are destroying my property," I shouted.
"I am stopping it from turning back on," she said.
I pulled my phone out of my pocket. My hands were shaking badly enough that I mis-hit the first digit and had to start over. The dispatcher's voice came on, calm and measured, and I gave her my address in Cedar Falls and said there was a woman on my roof destroying solar panels and that she was not leaving.
"Is anyone in danger?" the dispatcher asked.
Grace looked up at me then, the can paused in midair, and for a moment I saw her face the way I had seen it a hundred times before β patient, practical, the face of the woman who had checked the mail for us and watered our tomatoes. Then she turned back to the panel and kept spraying.
"No," I told the dispatcher. "She is not hurting anyone. She is just β she is painting my roof."
"Stay on the line until an officer arrives," the dispatcher said. "Do not approach her."
When I hung up, Grace had finished the fifth panel and was moving to the sixth. Mia pressed her shoulder against the window frame next to me.
"Why isn't she running?" Mia whispered.
"I don't know."
"Is she having some kind of breakdown?"
"I don't know, honey."
The truth was that nothing about Grace looked broken. She worked carefully, the way she worked at everything, capping the can between passes to keep the paint from drying in the nozzle. She was a woman who had survived fifty years of marriage, a husband's death, and a granddaughter moving in, and she did not look like someone who had lost her mind. She looked like someone who had decided.
When the last panel was fully covered, she set the can down beside her foot. She wiped her hands on her gardening gloves and stood there, balanced on the slope, waiting. It reminded me of the way she used to wait at my front door on Sunday evenings with a casserole dish, unhurried, certain she would be let in.
"Come down," I said.
"I will," she said. "But do not reset the inverter."
"Why?"
"Because the moment those panels begin producing again, they will know I failed."
"Who will know?"
She looked past me, over my shoulder, toward the yellow house behind mine. Toward the upstairs window where her sixteen-year-old granddaughter Sophie slept most mornings.
"My granddaughter is still inside," she said.