The airline confirmed Mark had checked in online, but his gate pass was never scanned at the terminal.

I handed over digital access to my father’s motion light system.

The local storage drive had saved motion-triggered clips.

There was no hidden audio recorder in the camera.

It captured something far more concrete.

On Sunday at 2:18 AM, Mark appeared on camera carrying the red fuel container.

He knelt beside the utility room vent for nearly four minutes.

Then he walked away carrying an adjustable pipe wrench.