- Country: France, Spain
- Genres: Crime, Horror
- Release: 1969-02-10
- Director: Santos Alcocer
- Writers: Santos Alcocer , Enrique Jarber
- Language: Spanish
- Stars: Howard Vernon , Danielle Godet , María Saavedra , Adolfo Arlés , José Bastida , Rosita Yarza , José María Seoane , Tota Alba , Mery Leyva , Nuria Gimeno
- Runtime: 89 min
- Awards: N/A
- AKA: The Orgies of Dr. Orloff , Only a Coffin (United States of America) , Les orgies du docteur Orloff (France, French Republic) , Le orge nere del Dr. Orloff (Italy) , Sólo un ataúd (Spain) , Die Folterkammer des Doktor Orloff (Germany) , El enigma del ataúd , El enigma del ataúd (Spain) , Ta epta thymata tou Satana (Greece) , Erotik in der Folterkammer
- Plot: A doctor invites his relatives to his castle, all the while planning to murder them when they arrive. However, when he himself is found murdered, the relatives know they have to find the killer before he gets them all.
- IMDB:tt0060373
Only a Coffin Cast · · · ALL
Santos Alcocer
Director
Howard Vernon
Dam Gaillimh
Tota Alba
Teodora
Danielle Godet
Greta
José María Seoane
Inspector de policia
Rosita Yarza
Sarah
María Saavedra
Judith
Adolfo Arlés
Pablo
José Bastida
Daniel
Fabián Conde
Emilio S. Espinosa
Nuria Gimeno
Mery Leyva
Rebecca
Javier de Rivera
Alice Arno
Naked Girl (French version) (uncredited)