3 books in series

B.P.R.D.: The Devil You Know

B.P.R.D.: The Devil You Know is a 3-book series with 3 released primary works first released in 2011 with contributions by Mike Mignola and Scott Allie.

B.P.R.D.: The Devil You Know, Vol. 1: Messiah
B.P.R.D.: The Devil You Know, Vol. 2: Pandemonium
B.P.R.D.: The Devil You Know, Vol. 3: Ragna Rok