Frankenstein Underground, the sequel to Hellboy: House of the Living Dead is a Mike Mignola masterwork. With two successful films, a TV show and numerous successful graphic novels, the Hellboy series is past its 20th year and remains stronger than ever. After a fight with Hellboy, Frankenstein's monster escapes the terrible Mexican laboratory where he was imprisoned and discovers strange creatures beneath the desert, where he'll learn some of the greatest secrets of the mystical world in the strangest Hellboy spinoff yet!