• 
  Les Tremayne

  Dr. John Basso
• 
  Pat Delaney

  Doreena (as Pat Delany)
• 
  Neil Fletcher

  Sam Crane
• 
  Aron Kincaid

  Capt. Theodore Dell
• 
  Byron Lord

  The Creature
• 
  Scotty McKay

  Singer
• 
  Roger Ready

  Lt. Blake
• 
  Suzanne Roy

  Lynn Crane (as Suzanne Ray)

• 
  Barnett Shaw

  Investigating psychiatrist
• 
  Annabelle Weenick

  Mrs. Crane (as Ann McAdams)
• 
  Ron Scott

  Nick

• 
  Robert C. Jessup

  imagine