No Mercy by Michael John Grist, Mike Grist

They came for his kids. There can be no mercy. Black-ops legend Chris Wren has hunted the Blue Fairy for months - a hacker group stalking innocents on the dark Internet. Including his kids. Now an anti-Blue Fairy activist is dead in Detroit, two more have been abducted, and Wren alone knows what it means. The monsters are crawling out into the light. As a Blue Fairy army rises and a mass hacking attack threatens to cripple the USA, only Wren and his brilliant lieutenant Sally Rogers stand ready to enforce true justice: No mercy for the wicked. The acclaimed Chris Wren novels are each a complete action adventure, and can be read in any order. ★★★★★ "Every bit as gripping as Reacher, Bourne and Rapp - I've read the entire series twice!"★★★★★ "A real rip-roaring adventure. Chris Wren is awesome. I want more!"★★★★★ "Addictive, intelligent, edge-of-your seat writing - as urgent and gripping as it gets!" Plunge into this action-packed thriller series today!