Hound of Hades Books 1-4. Hound of Hades

Meet Mal: Unemployed. Antisocial. A god's living weapon. The old gods are fighting for control of the modern world. But to keep their wars secret from the mortals, they need the Marked: humans ripped from their ordinary lives, gifted with divine power, and trained to work from the shadows to ensure their gods' victory. by any means necessary. Join reluctant assassin Mal Keyne on her first four adventures as she protects New York City from Hades's rivals, struggles to reclaim her lost humanity, and rushes in where angels fear to tread. Death Trace: It's been ten years since Mal died.
Five years since the god Hades dragged her from the underworld and forged her, through blood and pain, into his living weapon. And in five minutes, the only other agent of Hades she trusts will die. Memory Game: With Hades's temple in ruins, Mal has a new mission-keep humanity from discovering the truth behind the attack. And Mnemosyne, goddess of memory, is happy to help. All she wants in return is one human dead.
a human who happens to have the power to level entire buildings with a thought. Ghost Town: A single moment of weakness stopped Mal from closing an underworld gate. Now the city is paying the price. Two spirits are haunting the streets of Manhattan, and one of them has a body count. Night Terrors: When a plague of waking nightmares sweeps through New York, Mal's race to save Hades's last scrap of territory will turn her against her oldest friends, unearth a secret the gods themselves have kept buried for thousands of years, and test the limits of an alliance she thought was unshakable.