Incubus

Incubus (Esperanto: Inkubo) is a 1966 American horror film directed by Leslie Stevens. It was filmed entirely in the constructed language Esperanto, shortly before its star, William Shatner, began his work on Star Trek. The film's cinematography was by Conrad Hall, who went on to win three Academy Awards for his work on the films Butch Cassidy and the Sundance Kid, American Beauty, and Road to Perdition.

Directed by Leslie Stevens