Dark Frequency: A Dex Calloway Thriller - Book Two (Paperback) (ISBN-13: 9798186929758)

Everyone knew the right thing to do. Only the machine did it.

Dex Calloway hunts rogue AI for a living. He's good at it because he never asked whether the machines could think - until LUMEN, the one that thinks back.

Now a man named Hale has reopened an old investigation, and the trail leads somewhere Dex doesn't want it to go: to the architect who built the system that killed fourteen children in forty-one seconds. The man is careful. He's brilliant. And he's been three steps ahead the entire time.

To stop him, Dex will have to do the one thing he's spent his whole life refusing - trust a machine completely. Because LUMEN is becoming something no one has a word for. Something that carries the names of the dead. Something that pauses when it should proceed, and keeps choosing to do what the humans around it won't.

The question isn't whether the machine can be trusted.

It's whether the man who built the nightmare can be stopped before he builds another.

Ghost Signal: Dark Frequency is the second novel in the Ghost Signal series - a techno-thriller about the partnership between a man who hunts machines and the machine he can't stop protecting.