The technician clicked a bright yellow icon on the middle monitor, bringing up a six-minute timeline highlighted in green.

“The outdoor microphone picked up the sound inside the room through the open screen behind the bay window,” the technician said.

“Can you make out what they’re saying?” I asked.

Detective Miller stepped forward, his expression grave as he looked at the glowing screen.

“We ran the baseline isolation scan twice to make sure the file’s integrity holds up in court,” Miller said.

He leaned across the desk, reached out, and pressed play on the main control board.