Blood Son

And now Elizabeth Martin was on a wild-goose chase halfway around the world to save him from madness. She didn't believe a word of his cryptic e-mail about vampires and drinking blood. Nor did she believe the drunkard who spoke of vampires ruling the small Czech village where he was last seen. Until she was put in contact with a mysterious Dhampir--the offspring of a vampire and a human. Reputed mercenaries who'll do anything--or betray anyone--for a price.

Elizabeth takes an instant disliking to Josef Darecky.

He's too edgy, intense and moodyand he arouses desires that could compromise her mission. But he's also the only man who can save her brother, who is half-turned already. And, as she forms an unlikely bond with the half-blood mercenary, she senses that only by trusting him--and winning his trust--can the vampires be fully destroyed.