Shadowmaster (Nightsiders #3)

Humans and vampires on the brink of war

In San Francisco, a fragile truce is threatened by an assassination plot. Dhampir agent Phoenix Stryker has the beauty, brains – and blood – to infiltrate the vampires’ secret society and save the city. But once she’s in she finds her target, the assassin Drakon, is not the monster she expected.
Handsome, honourable and irresistibly attractive, Drakon will stop at nothing to save his people – and protect the woman he needs even more than the blood that keeps him alive. Now the key to the world’s survival may lie in their dangerous alliance…