The Ghost of Slumber Mountain
Fashioning miniature models and then painstakingly repositioning them for each frame of film, O'Brien created in Ghost the illusion of live, moving dinosaurs including a brontosaurus, triceratops and tyrannosaurus rex. An advertising tagline for the film read, "These giant monsters of the past are seen to breathe, to live again, to move and battle as they did at the dawn of life!"
O'Brien co-wrote the script with producer Herbert M. Dawley, and both take leading roles in the film. Dawley plays Uncle Jack, who tells his nephews about his trip to Slumber Mountain, where he dreamed of meeting the ghost of an old hermit called Mad Dick (O'Brien), and was able to watch prehistoric creatures through a magical telescope offering a view into the past. Among the sights witnessed are a battle between a giant bird and a snake; and a fight to death between two triceratops.
The original investment of about $3,000 in The Ghost of Slumber Mountain yielded $100,000 in profits. The film attracted the interest of Watterson R. Rothacker, founder of the Industrial Motion Picture Company, which encouraged the development of special effects techniques. O'Brien joined forces with Rothacker to create the prehistoric creatures of The Lost World (1925), another landmark in stop-motion special effects.
Producer: Herbert M. Dawley
Director: Willis H. O'Brien
Screenplay: Herbert M. Dawley, Willis H. O'Brien
Cinematography: Willis H. O'Brien
Special Effects: Willis H. O'Brien
Principal Cast: Willis H. O'Brien (Ghost of Hermit), Herbert M. Dawley (Uncle Jack).
BW-16m.