• 
• Leslie Adams
• Marshall Stevens
  

• 
• J. W. Austin
• Leyden Duke
  

• 
• George Blackwood
• Neil Merlin
  

• 
• Charles Edwards
• Prof. Haines
  

• 
• Eden Gray
• Mavis
  

• 
• Howard Lang
• Dr. Xavier
  

• 
• Robert Lowing
• Prof. Graham Wells
  

• 
• Barry Macollum
• Ben
  

• 
• Boris Marshalov
• Prof. Haines
  

• 
• Florence Shirley
• Eleanor Stevens
  

• 
• May Vokes
• Jessie
  

• 
• Alixe Walker
• Miss Warde
  

• 
• Howard Warren Comstock
• Writer
  

• 
• Allen C. Miller
• Writer
  

• 
• Josephine Victor
• Director
  

• 
• Harry Brandt
• Producer
  

• 
• William Brandt
• Producer