Nalini Singh - Angyalháború - Angelic hunter 6.

Nalini Singh returns to the world of wild passion and deadly force...

Angels fall from the sky in New York. They were attacked by some unknown force.
Vampires are decimated by an unprecedented disease.
Guild hunter Elena Deveraux and New York Archangel Raphael must find the source of the deadly disease before it spreads throughout the city, wiping out its population and leaving a ruined wasteland in its wake. Soon, however, Raphael's Tower also comes under enemy siege.
And if all that weren't enough, as New York continues its life-or-death struggle, a much darker force also sets its sights on the city...and Raphael. Rivers turn red, nightmares come alive, and the world will never be the same again.

"Have you ever wondered what a true romantic hero should be like? Then pick up any part of the Angel Hunter series and read them all." Vampire Book Club