B.P.R.D. HELL ON EARTH VOLUME 4: THE DEVIL'S ENGINE & THE LONG DEATH TPB

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.