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 where an elite squad of monster-hunting Templar knights wages covert warfare against biblical nightmares—and their commander carries a blade inscribed with both "Defender" and "Vengeance."

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 readers are saying:

"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."

"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."

"The Heretic doesn't waste time. Five pages in, Cade's already shooting kneecaps and watching demons crawl out of corpses. This is urban fantasy for people who want their monster hunters to use actual military tactics."

"Cade Williams is everything I wanted from a supernatural warrior—scarred, ruthless, and carrying a sword literally etched with the word 'Vengeance.' The man killed a drug lord just to send a message to demons. That's metal as hell."

"The assault on the necromancer's compound in the Louisiana swamp is worth the price of admission alone. Blackhawks, revenants, a haunted graveyard, and a relic that can change the world. Nassise knows how to deliver action."

"Finally, a protagonist who doesn't angst about violence. Cade's wife was murdered by a fallen angel—he's not going to talk the demons to death. The Heretic is relentless."

"The mythology is deep, the action is brutal, and Echo Team feels like actual special forces operators who happen to fight supernatural threats. This series is going to be huge."

New York Times and USA Today bestseller Joseph Nassise launches his internationally acclaimed Templar Chronicles series with a vengeance-fueled tale of military precision, cosmic horror, and one man's unrelenting war against the darkness that destroyed his life.