<P> The Black Dagger Brotherhood is an ongoing series of paranormal romance books by author J.R. Ward . The series focuses on a society (the "Black Dagger Brotherhood") of vampire warriors who live together and defend their race against de-souled humans called lessers . The first book in the series was published in 2005 . </P> <P> Ward's Fallen Angels series is set in the same universe, and has some overlap in characters, but little overlap in story lines . </P> <Ul> <Li> Book 1: Dark Lover ISBN 978 - 0 - 451 - 21695 - 3 </Li> <Li> Book 2: Lover Eternal ISBN 978 - 0451218049 </Li> <Li> Book 3: Lover Awakened ISBN 978 - 0451219367 </Li> <Li> Book 4: Lover Revealed ISBN 978 - 0451412355 </Li> <Li> Book 5: Lover Unbound ISBN 978 - 0 - 451 - 22235 - 0 </Li> <Li> Book 6: Lover Enshrined ISBN 978 - 0 - 451 - 22272 - 5 </Li> <Li> Book 6.5: "Father Mine" ISBN 978 - 1 - 4406 - 4161 - 9 </Li> <Li> Book 7: Lover Avenged ISBN 978 - 0 - 451 - 22585 - 6 </Li> <Li> Book 8: Lover Mine ISBN 978 - 0451229854 </Li> <Li> Book 9: Lover Unleashed ISBN 978 - 0451233165 </Li> <Li> Book 10: Lover Reborn ISBN 978 - 0451235848 </Li> <Li> Book 11: Lover at Last ISBN 978 - 0 - 451 - 23935 - 8 </Li> <Li> Book 12: The King ISBN 978 - 0 - 451 - 41705 - 3 </Li> <Li> Book 13: The Shadows ISBN 978 - 0 - 451 - 41708 - 4 </Li> <Li> Book 14: The Beast ISBN 978 - 0 - 451 - 47517 - 6 </Li> <Li> Book 15: Blood Kiss (Black Dagger Legacy Series #1) ISBN 978 - 0 - 451 - 47532 - 9 </Li> <Li> Book 16: Blood Vow (Black Dagger Legacy Series #2) ISBN 978 - 0 - 451 - 47533 - 6 </Li> <Li> Book 17: The Chosen ISBN 978 - 0 - 451 - 47519 - 0 </Li> <Li> Book 18: Blood Fury (Black Dagger Legacy Series #3) ISBN 978 - 0 - 451 - 47534 - 3 </Li> <Li> Book 18.5: "Dearest Ivie" </Li> <Li> Book 19: The Thief ISBN 978 - 0 - 451 - 47521 - 3 </Li> </Ul> <Li> Book 1: Dark Lover ISBN 978 - 0 - 451 - 21695 - 3 </Li>

How many books are in the black dagger brotherhood