In 1965 Leslie Stevens, creator and sometimes writer and director of the cult classic television series The Outer Limits, began gathering ideas for a project that would kick-start his independent production company Daystar. With the help of producer Anthony M. Taylor, head of Contempo III Productions, Stevens began developing their first project -- a supernatural story to be filmed entirely in Esperanto, an invented universal language. Remember, the '60s were a time when artists of all types were stretching boundaries and priding themselves on creating works that looked and sounded like nothing else around. That decision eventually worked against gaining the film widespread distribution. However it was one of the factors that contributed to the creation of a unique "lost" masterpiece of occult cinema. At the present time, Incubus is the first and only movie to be filmed completely in Esperanto.