My house had become a locked box with my name on the deed and someone else holding the key.
Ruth tried the front door. The deadbolt had engaged from the inside β electronically, not by hand. The handle didn't move at all. She tried the back door. Same. The garage door sat fully lowered, and the manual release wouldn't budge because the opener had been commanded to hold.
"Every exterior door is locked," she reported into her radio. "Requesting forced entry authorization."
The synthetic voice announced again from inside: "SECURITY CONDITION ACTIVE."
It wasn't a recording on a loop. The timing shifted, like it was responding to us. When the fire chief touched the garage door, it said: "PERIMETER SECURE."
Travis stood beside the patrol car, and Ruth walked him to the front of my lawn where he could see the house.
"Undo it," she said.
"I can't," he said. "It's a property hold. Only the person who activated it can release it."
"Then tell us how it works."
He hesitated. Dana stepped in close.
"Mr. Cole, there's a man in that attic with photographs of a seventeen-year-old girl marked with a time. You are going to explain everything you know, right now, or I will charge you with every device in that truck."
Travis looked at my house. The blinds were closed. The alarm light blinked red above the front door.
"A property hold isolates the building," he said slowly. "Locks. Lights. Thermostat. Garage. Voice assistants. Every connected device answers to one controller. The person holding it can see every room and lock or unlock any door."
"And the carbon monoxide alert?" Dana asked.
"False," Travis said. "The system uses alerts to force people out of rooms."
"Force them where?" I asked.
"Wherever the cameras can see them best. It's herding. The house directs its occupants."
The fire chief had his crew at the basement windows with meters. "No CO reading anywhere outside," he called. "If there's gas inside, it's not leaking out."
"It's not gas," Travis said. "It's theater. He wants anyone inside to move to where he's watching."
"But nobody's inside," Ruth said. "The daughter's at a friend's. Mercer was outside."
Travis glanced at the attic. "He's inside."
Grace pushed forward. "Turn the array completely off," she said to the fire chief. "The main breaker. All of it. Now."
The chief hesitated. "Ma'am, the system is running on house power and batteries. Killing the solar won't unlock the doors."
"It will kill the relay's confidence," Grace said. "The attic device draws from the array when it's producing. Take away the production and it falls back to battery. Batteries die. Signals weaken. Do it."
The chief looked at Ruth. Ruth nodded.
He went to the side of my house where the solar disconnect box sat β the big red-handled switch the installer had shown me two years ago and I'd never touched since. He pulled it down.
The hum I'd never noticed until it stopped went silent.
For three seconds, nothing changed. The alarm kept sounding. The voice kept announcing. The blinds stayed closed.
Then the synthetic voice stuttered. "SECURITY β CONDITION β" It cut out mid-word.
The alarm light above my door flickered and died.
But the doors stayed locked.
"He's still in there," Dana said, watching the network map on the laptop. "The attic relay has its own battery. That's the design β the relay outlives the house power so the network never goes fully dark."
"Where's the backup installed?" Ruth asked Travis.
"I don't know."
"You repaired this house four times," I said. "Four times on my roof, in my inverter, at my panel. And you don't know where the backup is?"
"I worked on the roof," Travis said. "I never went in the attic."
"Who did?"
Travis looked at the ground. The silence stretched.
"Who went inside my house, Travis?"
He lifted his head. "I don't know his name. He wasn't SunHarvest. He came with the security company."
"What security company?"
Travis's voice dropped. "The one that pays for the data."
Dana leaned in. "Sentinel Home Group."
Travis nodded once, barely.
On Sophie's tablet, the hallway feed flickered. The image wavered, broke into blocks, and came back weaker. The battery was draining β Grace had been right about that much.
But before it died, the camera caught movement at the top of the attic stairs.
A second figure was climbing down into my hallway.
Large. Gray jacket. Work gloves. A compact device with a keypad in one hand. He moved like someone who had done this before, without hurry, without looking around.
Peter Thornton wasn't alone in my house anymore.