A scientist invents a television device called the Iconoscope. Foreign agents hear about it and try to steal it.
Douglas Cameron
Gwen Lawson
James Llewellyn
Dick Randolph
Boris
Reni Vonich
Forbes
Burton Lawson
Carl Venner
William Sheldon
Harry Payne
Frome
Wagner
Amelia Sheldon
Caroline Sheldon
Police Sergeant
Jim Winton
Tamley
Grinton
Mr. Adler
Edgar
