 "Monster Blood Tattoo" is a series of three books, "Foundling," "Lamplighter" and a third untitled novel, set in the world of the Half Continent, a magical Victorian realm where an orphaned boy embarks on a perilous quest to become an apprentice to a line of monster bounty hunters. No writer or director is attached; Henson Co. hasn t decided how many features it will adapt from the trilogy.