Witchfinder: In the Service of Angels #5

Deep inside an asylum, Edward Grey faces a final confrontation with the mysterious beast that has been terrorizing the streets of Victorian London. Grey learns that sometimes you must use the Devil's own tools to fight him, when he meets up with the young Memnan Saa, the villain from B.P.R.D.: The Warning and The Black Goddess! Mike Mignola and Ben Stenbeck (B.P.R.D.: The Ectoplasmic Man) team up for this long-awaited glimpse into one of the Hellboy universe's greatest enigmas: nineteenth-century occult investigator Edward Grey!