Perfect Strangers
(Original title)
Desconhecidos
Brazil
Perfect Strangers
Germany (festival title)
Az idegen
Hungary
Perfect Strangers - Un'agghiacciante ossessione
Italy (dvd box title)
Perfect Strangers
Norway
Тихий омут
Russia
Savršeni stranci
Serbia
El extraño
Spain
El extraño: un romance aterrador
Spain (complete title)
Perfect Strangers
UK
Perfect Strangers
USA