We went back down to the basement. Grace carried an old laptop that she said had not been connected to the internet in years. Simone carried the tablet with the attic feed β Peter and Victor were still upstairs in my house, the black cabinet open, the portable drive blinking.
Grace connected the old node to the laptop. A password screen appeared.
Sophie stepped forward before Ruth could stop her. "I know the password."
She typed the date of her mother's death. Hannah. The hit-and-run. Nine years ago.
The screen unlocked.
Folders appeared, arranged by date. The newest had been created that morning. Its name was IF GRANDMA FINDS THE NODE.
Grace clicked it. Inside was a single video file.
Peter appeared on screen. He looked tired. Older than the photographs on Grace's shelf. He sat in a room with concrete walls, and for a moment he just looked at the camera, as if deciding where to begin.
"If this plays," he said, "Grace cut the network long enough for the old line to reconnect."
He paused.
"Mom, I am sorry."
Grace remained standing. No tears yet. Only stillness.
Peter continued. "I did not die in the warehouse fire. The man they identified as me was Caleb Morris, a Sentinel contractor. Victor ordered him into the building after the fire alarm. I knew the fire would happen. I did not know Caleb was inside."
Grace closed her eyes.
"I wanted the fire because I believed it would erase the network's central access keys. I helped disable the sprinkler alert. I intended the warehouse to be empty. Victor sent Caleb inside to retrieve equipment and allowed the man to die. Afterward, Victor used damaged dental files and my watch to identify Caleb as me. Sentinel told me the false death protected Sophie. If I accepted a new identity and kept maintaining the system, my family would remain safe. I agreed."
I listened to Peter's voice on the video, and to Grace breathing beside me, translating grief in real time without rehearsing a word of it.
"He let us bury another man," Sophie said quietly.
Grace did not answer.
The recording continued. "I told myself I had no choice. That was not true. I had choices. They were dangerous. They might have sent me to prison. They might have exposed what I had already built. I chose the version that allowed me to disappear."
"For eight years," Grace said, "he worked under another name. He monitored the neighborhood nodes. He removed evidence when residents complained. He wrote code allowing technicians to enter homes through smart locks."
"He also secretly copied data identifying every person who used the network for burglary," Simone added.
"He believed he could eventually expose the system," Grace said. "But each year made his own responsibility larger."
"Why come back now?" I whispered. Grace had asked it too.
The recording answered. "Sophie found me."
He explained β the unknown account, the childhood phrase, the video call, the file he asked her to copy. He said he had wanted to protect her and instead had frightened her, and that the fear had been the point and also the crime.
"I kept SunHarvest returning to Daniel's roof because I needed the central relay alive long enough to copy Sentinel's live property archive." Peter looked directly into the lens. "I did not expect Mom to attack it four times."
Grace almost laughed. Almost.
"The first three outages helped me," Peter said. "The fourth triggered Victor's emergency removal order."
Ruth leaned forward. "There it is."
"At 9:30 tonight, they will clear Daniel's archive." Peter's voice was steady now, the voice of a man reading instructions he had memorized. "They will take Mia because she has seen technicians inside her room. They will relocate Sophie because she knows I am alive. And they will remove Mom because she can identify the original node design."
Grace's photograph had been crossed out in red because she was not being relocated. She was being treated as an obstacle.
"The physical archive behind Mia's closet contains evidence," Peter said. "But the master copy is stored inside Sentinel's operations center. I programmed the attic relay to transmit both locations if someone activated the original test node."
Simone looked at the amber light. "It's transmitting now."
"To whom?" Ruth asked.
"To everyone Peter listed," Simone said. She was already checking the laptop's connection. A progress bar appeared on the screen.
"Files are being sent to state police, federal investigators, insurance companies, affected homeowners, and three newspapers," Simone read.
Grace shook her head slowly. "He is using my node as a dead-man switch."
Simone checked the transfer speed. Her face tightened.
"It will take eleven minutes," she said. "And Victor is taking the relay offline right now."