The Dead Channel

Emergency communications engineer Jonah Rook knows the voice behind the order: his sister Leah, the operator blamed for an old disaster that ended her career.

Then another false evacuation clears a road for a killing, the evidence begins erasing itself, and every clean record points back to Leah.

To clear her name, Jonah joins investigator Evelyn Park and Captain Mara Cross.

Their search leads into Common Shield, a public safety exercise built on a hidden vendor layer that can make radios, road signs, responder screens, and official logs agree before any human gives the order.

The deeper Jonah goes, the more dangerous certainty becomes.

Someone has learned how to manufacture consensus.

Tropes: framed operator, manufactured consensus, sibling loyalty, investigation procedural (what these mean)