- Country: Belgium
- Genres: Fantasy, Horror
- Release: 1974-04-01
- Director: Jean Brismée
- Writers: Pierre-Claude Garnier , Patrice Rhomm , Vertunnio De Angelis
- Language: French
- Stars: Erika Blanc , Jean Servais , Daniel Emilfork , Lucien Raimbourg , Jacques Monseau , Colette Emmanuelle , Ivana Novak , Shirley Corrigan , Frédérique Hender , Lorenzo Terzon
- Runtime: 95 min
- Awards: N/A
- AKA: The Devil's Nightmare (United States of America) , La plus longue nuit du diable (Belgium) , La nuit des pétrifiés (France, French Republic) , 淫虐地獄 (Japan) , O Demônio Sai à Meia-Noite (Brazil) , Au service du diable (Canada) , La plus longue nuit du diable , Au service du diable , Stin ypiresia tou diavolou (Greece) , The Devil's Nightmare (Germany) , Yö paholaisen linnassa (Finland) , The Devil's Nightmare (Norway) , The Devil's Longest Night , The Devil's Nightmare (United Kingdom) , Pesadilla demoníaca (Argentina) , Succubus , La nuit des pétrifiés , Nightmare of Terror , Vampire Playgirls (United States of America) , Στην υπηρεσία του διαβόλου (Greece) , The Devil Walks at Midnight , La terrorífica noche del demonio (Spain) , şeytanların hizmetinde (Turkey) , The Devil's Nightmare , Castle of Death , Au service du diable (France, French Republic) , Самая длинная ночь дьявола , O Demonio Sai a Meia-Noite (Brazil) , La terrificante notte del demonio (Italy)
- Plot: Undoubtedly, evil comes in many forms. With this in mind, the unholy stain of a silent, irrevocable curse weighs on the eerily vacant castle of the former World War II German general, Baron von Rhoneberg. For decades, a dark pact has been keeping the baron alive; however, now that a group of seven unsuspecting tourists has ended up in the ancient, memory-laden mansion of evil, unseen forces set in motion a bloody ballet of temptation, human weaknesses, and sin. Now, a mysterious, beautiful enchantress takes over, taking great pleasure in toying with the doomed visitors' unspoken desires. But Satan has all the time in the world. Is there an escape from the Devil's longest night?
- IMDB:tt0067592
The Devil’s Nightmare Cast · · · ALL
Jean Brismée
Director
Erika Blanc
Lisa Müller
Jean Servais
Baron von Rhoneberg
Daniel Emilfork
Satan
Jacques Monseau
Father Alvin Sorel
Lucien Raimbourg
Mason
Colette Emmanuelle
Nancy
Ivana Novak
Corinne
Shirley Corrigan
Regine
Frédérique Hender
Nurse Gerda
Lorenzo Terzon
Howard
Christian Maillet
Ducha
Maurice De Groote
Hans
Yvonne Garden