B.P.R.D. Hell on Earth: The Transformation of J. H. O'Donnell

A single-issue chapter of the sprawling B.P.R.D. Hell on Earth saga, this 2012 Dark Horse comic zeroes in on a lone, tragic Bureau agent. Written by Mike Mignola and Scott Allie, with art by Max Fiumara, it captures the series' signature blend of cosmic horror and personal ruin as J. H. O'Donnell confronts a monstrous transformation. A quiet, character-driven interlude within the larger epic, it shows how the Bureau's war against the apocalypse scars even its most peripheral members.