"in a most cold-blooded and ruthless manner." Elke Sommer as Vera Clyde, secretary. Accused of having fatally poisoned her sister's fiancé. Gert Fröbe as Wilhelm Blore, police official. Accused of committing perjury to frame an innocent man, who subsequently died in prison. Herbert Lom as Edward Armstrong, doctor. Accused of having operated on a woman while drunk, causing her death. Oliver Reed as Hugh Lombard, businessman. Accused of murdering the young woman who was to bear his child out of wedlock. (Revealed as Charles Morley) Richard Attenborough as Arthur Cannon, judge. Accused of having sentenced an innocent man to death by hanging. Maria Rohm as Elsa Martino, servant. Accused of helping her husband cause the death of their wealthy, invalid employer. Alberto de Mendoza as Otto Martino, servant. Accused of causing the death of his wealthy, invalid employer after tricking her into including him and his wife in her will. Adolfo Celi as André Salvé, military general. Accused of having been responsible for the deaths of five men who were under his command. Orson Welles as "U.N. Owen" – the Voice on the Tape. Naser Malek Motiei as Policeman (uncredited) Production Writing The 1974 film reuses the script of the 1965 version, even calling Oliver Reed's character "Hugh" instead of "Phillip," which was the character's name in the novel and play. It is set in an abandoned hotel in the Iranian desert. Casting Herbert Lom, who plays Dr. Armstrong in this film, also starred in the 1989 version, as the General (played by Adolfo Celi in this version). Filming Much of the film was shot on location in pre-revolution Iran. It is set at a massive, fictional hotel in the desert, adjacent to the ruins of Persepolis. Interior scenes were filmed at the Shah Abbas Hotel in Isfahan. The nearby Shah Mosque served as the hotel's exterior and main entrance. Wide shots of the hotel, next to the ruins, are effects shots combining photography of the mosque and the ruins. Portions of the film were shot within the ruins of Persepolis, and the famous terrace of the Ālī Qāpū palace, in Isfahan, is made to appear to be part of the ruins. The Bam Citadel was used as a location for Martino's death in the desert. Desert exteriors were filmed in Almería in Andalucía, Spain. Versions The European cut of the film featured a pre-credit sequence that showed the guests