Night of the Demon

American professor John Holden arrives in London for a conference on parapsychology only to discover that the colleague he was supposed to meet was killed in a freak accident the day before. It turns out that the deceased had been investigating a cult lead by Dr. Julian Karswell. Though a skeptic, Holden is suspicious of the devil-worshiping Karswell. Following a trail of mysterious manuscripts, Holden enters a world that makes him question his faith in science.

• 
  Jacques Tourneur
• 
  Pamela Gayler
• 
  Basil Keys

• 
  Dana Andrews
  Dr. John Holden
• 
  Peggy Cummins
  Joanna Harrington
• 
  Niall MacGinnis
  Dr. Julian Karswell
• 
  Maurice Denham
  Professor Henry Harrington
• 
  Athene Seyler
  Mrs. Karswell
• 
  Liam Redmond
  Professor Mark O'Brien
• 
  Reginald Beckwith
  Mr. Meek
• 
  Ewan Roberts
  Lloyd Williamson
• 
  Peter Elliott
  Professor K.T. Kumar
• 
  Rosamund Greenwood
  Mrs. Meek
• 
  Brian Wilde
  Rand Hobart
• 
  Richard Leech
  Inspector Mottrarn
• 
  Lloyd Lamble
  Detective Simmons
• 
  Peter Hobbes
  Superintendent
• 
  Charles Lloyd Pack
  Chemist
• 
  John Salew
  Librarian
• 
  Janet Barrow
  Mrs. Hobart
• 
  Percy Herbert
  Farmer
• 
  Lynn Tracy
  Air Hostess
• 
  John Harvey
  Hobart's Brother