Mota is a Martian representative, who has come to impose interplanetary law on the Earth (which has become too dangerous); opposing his authority is Kent Fowler, who resists the alien plot, without understanding its details.
Walter Reed
as Kent Fowler
Lois Collier
as Helen Hall
Gregory Gaye
as Mota
James Craven
as Dr. Bryant
Sandy Sanders
as Steve
Harry Lauter
as Drake
Richard Irving
as Ryan
Michael Carr
as Trent
Dale Van Sickel
as Watchman
Tom Steele
as Taylor
George Sherwood
as Gate Guard
Jimmy O'Gatty
as Grady
