Générique complet
An Alien Enemy
Louise Glaum
Neysa von Igel / Frau Meyer
Mary Jane Irving
Fräulein Bertha Meyer
Thurston Hall
David J. Hale
AA
Albert Allardt
Emil Koenig
CH
Charles Hammond
Adolph Schmidt
Jay Morley
Mayor Samuel J. Putnam
RL
Roy Laidlaw
Lewis Meyer
Joseph J. Dowling
Baron von Mecklin
CA
Clifford Alexander
Wireless Operator
