Nicholas Olivo

Having done the impossible and walked out of hell, Vincent Corinthos sets his sights on saving Megan and bringing down Treggen once and for all. Captured by rogue agents, Vincent finds himself cut off from agency support and must escape from HQ....

When an omniscient demon corrupts the Chroniclers and taints time itself, it falls to Vincent Corinthos to set things right.

The promise Vincent Corinthos made to Megan Hayes has been hanging over his head like the proverbial sword of Damocles. And now that sword has fallen. When Megan is murdered....

Vincent Corinthos has made his share of enemies. He's squared off against diabolical megalomaniacs, shadow lords and intergalactic conquerors. And now he and the rest of Boston's Caulborn....

Boston, 1932. Doc Graystone is contacted to evaluate security at a paranormal prison built by the US Navy....

Doc Graystone is summoned to a remote temple in the mountains to battle a terrifying undead known as a jiangshi....

Doc Graystone's tropical vacation is cut short when brutes wearing magical masks hijack a truck full of gold....

Tapped for a black ops mission to repair the damage, Vincent finds himself under the command of a man who doesn't trust him, and allied with an enemy he hasn't seen in 400 years....

The police are baffled by a series of killings in which mystical runes have been carved into the victims' flesh. Desperate for help, they turn to Doc Graystone, gentleman necromancer....

Four years ago, Caulborn agent Vincent Corinthos stopped a hellish ritual intended to transform Ulysses Pendleton into a creature of utter darkness....

After a slip of the tongue, godling Vincent Corinthos is obligated to keep his partner, Megan, "fine" forever. Enter the Keepers, who fulfill promises for a fee....

Vincent Corinthos has two things going for him: he's a top operative of a secret agency tasked with handling paranormal threats, and he's half-god....