Spain

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  Murder in a Blue World

  (1973)
• 
  ***

  The Murder Mansion

  (1972)
• 
  *

  Murieta

  (1965)
• 
  *

  Mutant Action

  (1993)
• 
  ***

  My Dear Killer

  (1972)
• 
  *

  The Mysterious Island

  (1973)
• 
  **

  Mystery on Monster Island

  (1981)
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  Naked Girl Murdered in the Park

  (1972)
• 
  *

  The Naked Killers

  (1977)
• 
  *

  The National Mummy

  (1981)
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  ***

  Navajeros

  (1980)
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  ***

  Navajo Joe

  (1966)
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  Necrophagous

  (1971)
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  Night Has a Thousand Desires

  (1984)
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  Night of Open Sex

  (1983)
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  The Night of the Devils

  (1972)
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  The Night of the Executioner

  (1992)
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  Night of the Scorpion

  (1972)
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  Night of the Seagulls

  (1975)
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  Night of the Skull

  (1974)
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  ***

  The Night of the Sorcerers

  (1974)
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  ***

  The Night of the Walking Dead

  (1975)
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  ***

  Night of the Werewolf

  (1981)
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  Nightmare City

  (1980)
• 
  *

  La niña del patio

  (1967)
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  ***

  The Ninth Gate

  (1999)
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  ***

  No One Heard the Scream

  (1973)
• 
  *

  Las noches del Hombre Lobo

  (1968)
• 
  *

  A Nun at the Crossroads

  (1967)
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  ***

  Oasis of the Zombies

  (1982)
• 
  *

  Obscene Desire

  (1978)
• 
  *

  La ocasión

  (1978)
• 
  *

  Occhio per occhio, dente per dente

  (1967)
• 
  *

  One After Another

  (1968)
• 
  *

  Only a Coffin

  (1967)
• 
  *

  Open Season

  (1974)
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  ***

  Open Your Eyes

  (1997)
• 
  *

  Operation Atlantis

  (1965)
• 
  *

  Operation Counterspy

  (1965)
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  *

  Operation Poker

  (1965)
• 
  **

  Orloff and the Invisible Man

  (1970)
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  ***

  The Orphanage

  (2007)
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  *

  Os cinco Avisos de Satanás

  (1970)
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  ***

  The Other Side of the Mirror

  (1973)
• 
  *

  La otra orilla

  (1965)
• 
  *

  Our Agent ‘Tiger’

  (1965)
• 
  *

  Our Man in Casablanca

  (1966)
• 
  *

  Our Man in Jamaica

  (1965)
• 
  *

  Pan’s Labyrinth

  (2006)
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  ***

  Panic

  (1982)

50 titles