The Invisible Ray
Overview  |  Cast and credits
The Invisible Ray
United States 1936

Directed by
Lambert Hillyer

Walter Kingsford
Ricca Allen
Robert Graves
Ray Turner
Daniel L. Haynes
Hans Schumm
Nydia Westman
Edwards Davis
Running time:80 minutes
Country:United States

Imdb link
Books with substantial mentioning of The Invisible Ray
Scott Allen Nollen
Boris Karloff, A Critical Account of His Screen, Stage, Radio, television and Recording Work
Jefferson, NC, 1991

Richard Bojarski
The Films of Bela Lugosi
Secaucus, NJ, 1980

Richard Bojarski and Kenneth Beals
The Films of Boris Karloff
Secaucus, NJ, 1974