Dark Witness: A Josie Bates Thriller (The Witness Series) (Volume 7)

As the edge of winter slices through fall, Josie Bates testifies in Washington D.C. about the Albanian blood feud that sent Hannah Sheraton and Billy Zuni fleeing for their lives, and Archer reluctantly abandons a trail that has gone cold in his search for the teenagers.
 Determined to stay one step ahead of the authorities who want Billy back and a blood feud that will only be satisfied when he is dead, Hannah and Billy head north. There they will hunker down in the darkest corner of earth they can find and wait for the danger to pass. Though the journey is treacherous, they finally find themselves isolated, safe, and as far from Hermosa Beach as they can get. But Hannah's relief is short lived. When the perpetual winter dark turns to inky black, they realize they've taken refuge in hell. Now the fight in front of her and Billy is not only for their lives, but their very souls.