Mike Mignola teams up with artist Ben Stenbeck (B.P.R.D.: The Ectoplasmic Man) for a long-awaited glimpse into one of the Hellboy universe's greatest enigmas: nineteenth-century occult investigator Edward Grey! After his confrontation with a spectral assassin, Sir Edward hopes to find answers from a mysterious medium in London's underworld, but discovers only a labyrinthine tangle of conspiracy as the body count continues to rise.