James Houghland, inventor of a new method by which television signals can be instantaneously sent anywhere in the world, refuses to sell the process to television companies, who then send agents to acquire the invention any way they can. On the night of his initial broadcast Houghland is mysteriously murdered in the middle of his demonstration and it falls to Police Chief Nelson to determine who the murderer is from the many suspects present.
Bela Lugosi
as Arthur Perry
June Collyer
as June Houghland
Huntley Gordon
as Dr. Henry M. Scofield
George Meeker
as Police Chief Nelson
Charles Hill Mailes
as James Houghland
Claire McDowell
as Mrs. Houghland
Hattie McDaniel
as Isabella
Allen Jung
as Ah Ling
Henry Hall
as Hammond
Charles K. French
as Donald M. Jordan
Larry Francis
as Mendoza
Billy Sullivan
as Reardon - Watchman (as William 'Billy' Sullivan)
