Heather Graham 
Bride of the Night [EPUB ebook] 

She’s the vampire that could destroy a nation At least, that’s what detective Finn thinks of Tara Fox.He’s convinced she’s been sent to take out the president. She’s the most attractive assassin he’s ever faced, but that won’t keep him from his duty. Tara has always been caught between worlds.As a vampire born and raised in Key West, she has many friends among the humans.Friends that are fighting and dying in the Civil War. When her strange dreams began, she thought of them as abstract visions. But she now knows that she must protect the president at all costs. Finn still won’t trust her. But Tara will do whatever it takes to save the president, even if it costs her heart.