BPRD HELL ON EARTH TP #5
PICKENS COUNTY HORROR
The B.P.R.D. crew investigates the site of a hundred-year-old magical ritual and Hellboy breaks into the secret library of a dead necromancer. Collects The Pickens County Horror #1-#2, The Transformation of J. H. O'Donnell, and The Abyss of Time Parts 1 and 2.
BPRD HELL ON EARTH TP #9
REIGN OF BLACK FLAME
With Liz Sherman back in fiery action, two B.P.R.D. teams make their way through the monster-filled streets of the Manhattan wasteland in order to reach the Black Flame's fortress and take down his army. Collects B.P.R.D. Hell on Earth #115-#119.
BPRD HELL ON EARTH TP #11
FLESH AND STONE
Things seem to be going well for the BPRD. With their alliance with the military, they now have all the munitions they need and, compared to what they faced in New York, an easy mission to clear a small town. But the town has strange connections to Howards's past as a prehistoric warrior, and more than its share of monsters. This volume collects B.P.R.D. Hell on Earth #125-#129.