Detonation Boulevard (The Wisdom's Grave Trilogy)

When NYPD detective Marie Reinhart met Nessa Roth, a Manhattan socialite and dabbler in the occult, sparks flew. Then came the gunfire. Nessa and Marie are the Witch and her Knight, characters from a fairy tale brought to life and trapped in an endless curse: to meet, fall in love, and be torn from each other’s arms by violent death, again and again for all eternity. Now they have one slim chance to escape their doom. It lies in Wisdom’s Grave, the resting-place of the first witch who ever lived, and the wellspring of magic. To find it, they’ll have to cross over two thousand miles of hostile territory from New York to Las Vegas, pursued by the law, the criminal underworld, and a cult of demonic bounty hunters. Their enemies have political power and an army of ruthless assassins. They have a book of black magic, a Cadillac, and a gun. The American heartland is about to become a war zone. And as portals to other worlds tear open, showing the way to secrets buried since the dawn of time, Nessa and Marie prepare to make their final stand.