BOOKS. abraham lincoln, vampire hunter

i havent read this one or anything, just merely saw that it exists, and i must say that i am really interested in it! first, i love me some abe lincoln! second, the premise is that the southern army was filled with vampires and lincoln is on a quest to kill them all, thats the cause of the civil war. wow, that sounds amazing! i just hope its as good as the version in my head!