Frost. Keith Murphy Urban Fantasy Thrillers, #2

Rule one for surviving Ragnarök? Don't piss off a Valkyrie. Ex-hitman Keith Murphy sold his services to a demon in order to stop an apocalyptic cult. Now he's stuck fighting a gang way against a local biker gang who knows far too much about magic for a pack of mortals. A routine hit turns into a mystery, and that mystery leads to a series of deaths with a very unexpected source. Something has crossed over from the darkest parts of the Gloom, and it seems like Keith sold his soul to delay Ragnarök instead of stopping it. The last, long winter frost before the end of the world is setting in, and the only man who can stop it is a pissed-off, well-armed assassin with nothing left to lose.Equal parts John Wick and John Constantine, the Keith Murphy series is an apocalyptic thrill ride that blends the thriller with urban fantasy. PRAISE FOR THE KEITH MURPHY SERIES "All the grit and growl of the golden age detectives let loose upon the monsters and magics that keep us fascinated (and occasionally afraid) as we curl up on the couch at night.
Ball is masterful in his use of tension, with a knack for keeping readers glued to the screen or page. His ability to showcase emotional connections and complications without devolving into self-pitying monologues or poetic meanderings give the stories an action movie vibe that adds tension and focus to the stories." Kylie Thompson, HushHushBiz