Shadows Strike — Dianne Duvall

The Immortal Guardians protect the innocent in secret. Sometimes the secret gets out...

U.S. law enforcement agent Heather Lane can read minds. But not the future. The dream of battle and blood that recurs every night must be a fluke, some obscure terror from her own mind. What its significance might be, she can't guess: an attack from seven psychotic vampires at once, only separated from nightmare by an eighth very different immortal. A handsome, brave man fighting at her side, a man she misses when she wakes.

Then the dream comes true. Heather is flung into a war between predators and protectors of humanity, the man from her dreams beside her again. Except now that she's awake, she isn't sure she can trust Ethan, or the shadow organization he represents. The U.S. military doesn't trust either of them. But against an onslaught of evil like the one that's coming, it will take everything they have just to survive...