Doomsday Holdover

About this book

At three in the morning, network engineer Maren Kellner finds nothing wrong: every screen reads green. But the clocks that keep a mobile network in step have begun to drift apart, and nobody above her wants to hear it. A techno-thriller with no cavalry coming.

Every screen in the network operations center reads nominal. Every screen is reading a clock that quietly stopped telling the truth.

Maren Kellner is called out at three in the morning for a dropped handover on a live cell boundary, and finds nothing wrong. The telemetry is green. The alarms are silent. But Levanter Mobile’s satellite-disciplined clocks have slipped into holdover, running on their own oscillators, drifting microseconds apart while every one of them still reports locked. Her director closes the ticket as a transient. The board wants the green kept green.

The trigger is a firmware update the timing vendor pushed under Levanter’s own support contract, made mandatory by a clause nobody read twice, reversible only by the vendor and only in stages that take days. Then an entire boundary of cells falls out of step at peak load and service tears open across a region. Maren defies the stand-down order and is off the account within the hour. To stop it she has to prove the unprovable: that the shared time every system silently assumes has stopped existing, against instruments that were procured never to notice.

A cold, procedural techno-thriller. No cavalry, no cabal, nothing supernatural. Just an engineer who is right too early, and a catastrophe that lives inside a purchase order.

Perfect for fans of Marc Elsberg’s Blackout and the systems-level suspense of Daniel Suarez.

Book 1 in The Doomsday Signal series. Each book follows a different professional one level deeper in the machinery that keeps time, and stands on its own.

Start at three in the morning, when the first call drops.