Barker is one of the leading authors of contemporary horror/fantasy, starting out with pure horror writing early in his career, mostly in the form of short stories (collected in Books of Blood 1 - 6), and later moving towards epic modern-day fantasy with some horror elements. Barker's distinctive style is characterized by the notion of hidden fantastical worlds existing side by side with our own (an idea he shares with contemporary Neil Gaiman), the role of sexuality in the supernatural (in his later work, particularly homosexuality), and the construction of coherent, complex and detailed mythologies.