The Invisible Ray is a 1920 American science fiction film serial directed by Harry A. Pollard. The film is considered to be lost. After a mineralologist discovers the ray with extraordinary powers, a group of scientists seek to use it for a criminal scheme.
It starred Ruth Clifford, Jack Sherrill, Sidney Bracey, Edwards Davis, Corene Uzzell, William H. Tooker and Edith Forrest.
Early press accounts cited the “scientific foundation of the plot. In this respect the production differs from other serials. Fact and not fancy governs the action throughout. The plot is based on a scientific investigation made by the author of the serial, Guy McConnell, investigation for several research institutions and for the Chemical Division of the United States Department of the Interior.”