How many books are there of the blackdagger brotherhood ? Is there a spin off i really hope so i hate books that come to the end so soon

There are 9 books number 10 is coming out seguinte year.There also is the Fallen angel series that she uses some characters. She says in interviews that she doesn't want to end the series soon. Hope that helps.

9 book 10 is being released in late March 2012.

There is also another book (I forget the name) that tells about Zsadist's life as a blood slave and his life with Bella and whatnot. (Different that Lover Awakened)

There is 13 books in total including the newest one "The King"