<p>In Ashen Verge a city wired to kill ex-cop Cal Rourke hunts the shadow behind his partner's murder. Five years ago Eddie died chasing a signal-a hum that's claimed twenty-four lives and won't stop. From blood-soaked warehouses to a grid patched deep under the streets Rourke tears through killers and ghosts-Graves Shade Tate-each a cog in a machine that's waited for him. Stitched up bleeding out and armed with a badge and a grudge he'll end it or die trying. A relentless thriller of vengeance and silence where every wire hums with death.</p>