• 
  Reginald Le Borg

  regizor

• 
  Robert E. Kent

  scenarist

• 
  Vincent Price

  Simon Cordier
• 
  Nancy Kovack

  Odette Mallotte
• 
  Chris Warfield

  Paul DuClasse
• 
  Elaine Devry

  Jeanne D'Arville
• 
  Ian Wolfe

  Pierre
• 
  Mary Adams (I)

  Louise

• 
  Lewis Martin

  Fr. Raymonde
• 
  Sayre Dearing

  Man at Art Gallery
• 
  Stuart Holmes

  Magistrate
• 
  Edward Colmans

  Andre D'Arville
• 
  Harvey Stephens

  Louis Girot
• 
  Joseph Ruskin

  The Horla
• 
  Don Brodie

  Marcel the Postman

• 
  Gloria Clark

  Arguing Cafe Couple
• 
  Wayne Collier

  Arguing Cafe Couple
• 
  Nelson Olmsted

  Dr. Borman
• 
  Stephen Roberts

  Police Captain Robert Rennedon
• 
  Chris Warfield

  Paul Duclasse
• 
  Dick Wilson

  Martin