The Heretic. Templar Chronicles, #1

Monsters prey on the innocent. He preys on the monsters. They call him the Heretic. Five years ago, Cade Williams was just an ordinary cop, until the night he and his wife were savagely attacked by a fallen angel known as the Adversary. Cade survived. His wife did not. Now he commands the Echo Team, an elite squad of monster-hunting modern Templar knights operating in the shadows between the mortal world and the supernatural.
When demons, dark magic, and biblical nightmares threaten humanity, it's up to Cade and his battle-hardened operatives to hunt them down and send them back to Hell-by any means necessary. A pulse-pounding supernatural military thriller packed with relentless action, ancient conspiracies, and a hero who'll stop at nothing to protect the innocent. But protecting mankind isn't the only reason Cade became a Templar.
He hasn't forgotten the events of that summer night, and he fully intends to even the score with the creature that destroyed his life. In a world where angels have fallen and monsters walk among us, vengeance and duty have become the same thing. Perfect for fans of Jim Butcher's Dresden Files, Faith Hunter's Jane Yellowrock series, and the dark supernatural edge of Constantine. What people are saying: "If the Templars recruited from Special Forces and sent them to fight biblical horrors, you'd get the Echo Team.
The Heretic delivers non-stop action with a gritty, boots-on-the-ground approach to the supernatural.""Cade Williams is the warrior Dresden Files fans have been waiting for-less wizardry, more tactical takedowns, and all the monster-hunting intensity you crave.""Military precision meets urban fantasy. This is Constantine with a tactical team and zero patience for demonic BS."