Info édition : Coontient Witchfinder: In the Service of Angels (2009) #1-5 et deux récits courts parus initialement dans MySpace Dark Horse Presents (2007) #16 et Hellboy: The Wild Hunt (2008) #7. Postface de Mike Mignola. En fin de recueil, carnet de croquis annoté de 10 pages. Noté "First Edition: April 2010".
Résumé: In one of Grey's first cases as an agent of the queen, he goes from the sparkling echelons of Victorian London to its dark underbelly, facing occult conspiracies, a rampaging monster, and the city's most infamous secret society: The Heliopic Brotherhood of Ra.