Alan Holt is a radio expert who has invented a death ray machine for the U.S. government. International spy Drakma wants to get his hands on the invention and he sends his henchmen to attack Holt in his laboratory.
Agnes Ayres
as Mary Walsworth
Antonio Moreno
as Alan Holt
Tyrone Power Sr.
as Drakma (as Tyrone Power)
Louis Wolheim
as Kurder
Dagmar Godowsky
as Claire
Jack Lionel Bohn
as Don Powell
Maurice Costello
as The Cripple
Frank Currier
as Adm. Walsworth
Ivan Linow
as Lab assistant
