Nightmare
(Original title)
Pesadilla
Argentina
Nightmare
Australia
Im Dunkel der Nacht
Austria
Nachtmerrie
Belgium (Flemish title)
Le cauchemar
Belgium (French title)
Pesadelo
Brazil
Nightmare
Canada (English title)
Pesadilla
Chile
Pesadilla
Colombia
Kauhujen yö
Finland
Le cauchemar
France
Το πιο μυστηριώδες έγκλημα
Greece
To pio mystiriodes eglima
Greece (transliterated title)
Nightmare
Ireland (English title)
Giorni di dubbio
Italy
Nightmare
Japan (English title)
Pesadilla
Mexico
Nachtmerrie
Netherlands
Nightmare
New Zealand (English title)
Nattens mare
Norway
Pesadilla
Peru
Koszmar
Poland
Dez Dias de Pesadelo
Portugal
Cosmar
Romania
Ночной кошмар
Soviet Union (Russian title)
Noche de pesadilla
Spain
Fasans natt
Sweden
Nightmare
UK
Nightmare
USA
Pesadilla
Venezuela
Im Dunkel der Nacht
West Germany