• 
  Melville Shavelson

  regizor

• 
  Geoffrey Lewis

  Dr. Crandon
• 
  Paul Michael Glaser

  Harry Houdini (Erich Weiss)
• 
  Wilfrid Hyde-White

  Supt. Melville
• 
  Ruth Gordon

  Cecilia Weiss
• 
  Adrienne Barbeau

  Daisy White
• 
  Bill Bixby

  Rev. Arthur Ford
• 
  Peter Cushing

  Sir Arthur Conan Doyle

• 
  Sally Struthers

  Bess Houdini
• 
  Barbara Rhoades

  Margery Crandon
• 
  Jack Carter

  Theo Weiss
• 
  Clive Revill

  Dundas Slater

• 
  Peter Matz

  departament sunet
• 
  John Woodcock

  montaj
• 
  Melville Shavelson

  scriitor

• 
  Peter Benchley

  scriitor