The story of Bertha Thompson (played by Barbara Hershey) and "Big" Bill Shelly (played by David Carradine), two train robbers and lovers who are caught up in the plight of railroad workers in the American South. When Bertha is implicated in the murder of a wealthy gambler, the pair become fugitives.
Paul (Belmondo), a former womanizer who marries the head of the medical department's "unattractive" daughter Christine (Farrow) because he thinks attractive women can't be trusted and make poor wives.
In London, a serial killer is raping women and strangling them with neckties. Most of the film takes place in Covent Garden, which at the time was still the wholesale fruit and vegetable market district. Fairly early in the film, the audience sees that fruit merchant Robert Rusk (Barry Foster) is in fact the murderer. However, circumstantial evidence has already built up around his friend Richard Blaney (Jon Finch).
Wealthy housewife and children's author Cathryn (Susannah York) receives a series of disturbing and eerie phone calls in her home in London one dreary night. The female voice on the other end suggests mockingly to her that her husband Hugh (René Auberjonois) is having an affair.
The title character is a vicious villainess who commands a Thought Factory in the Scottish Highlands. Intent on achieving world domination, she kidnaps ex-CIA agent Anthony Lawrence and forces him to help her hijack a secret nuclear weapon, the Polaris submarine.
Norah Benson and her younger brother Joel Delaney attend a party being given by Dr. Erika Lorenz. Joel's girlfriend Sherry appears. Norah is extremely protective of her brother, and it is subtly implied that theirs is not an ordinary siblings' relationship. The siblings have sensibly different, albeit somehow complementary mindsets; in contrast to Norah's upscale, self-compliant snobbishness, Joel is more of an adventurous, bohemian type and frequently goes on trips to exotic locations.
Le commissaire divisionnaire Le Guen, qui a réussi à arrêter le tueur Georges Gassot, se heurte aux méthodes plus modernes de François Tellier, nouveau directeur de la P.J. Gassot s'enfuit de l'hôpital psychiatrique à destination de Marseille où il rencontre une jeune prostituée allemande Gerda. Mais Le Guen, par l'intermédiaire d'un journaliste, fait croire au Milieu que Gassot est à Marseille pour se mettre à la tête de leurs affaires ; le meurtre du souteneur de Gerda, à Marseille, et celui du passeur de Gassot à Marseille laissent croire à cette version. Gassot remonte à Paris, suivi par Le Guen.
En 1930 à Paris, Léon Galipeau, médecin généraliste à la compétence discutable, ausculte Louis Martinet, célibataire de 59 ans. Persuadé que son patient, usé, n'a que deux ans tout au plus à vivre, Galipeau convainc son frère Émile d'acquérir en viager la maison de campagne que possède Martinet dans un petit village de pêcheurs alors méconnu : Saint-Tropez. Confiants dans leur affaire, les deux frères acceptent même d'indexer la rente viagère sur le cours d'une valeur, pensent-ils, sans avenir : l'aluminium.
In futuristic London, Alex DeLarge is the leader of his "droogs", Georgie, Dim and Pete. One night, after getting intoxicated on "drencrom" (milk laced with drugs), they engage in an evening of "ultra-violence," which includes beating an elderly vagrant and fighting a rival gang led by Billyboy. After stealing a car, they drive to the country home of writer F. Alexander, where they beat Mr. Alexander to the point of crippling him for life. Alex then rapes his wife while singing "Singin' in the Rain".
In 1780, Prince Mamuwalde (William H. Marshall), the ruler of the Abani African nation, seeks the help of Count Dracula (Charles Macaulay) in suppressing the slave trade. Dracula refuses to help, and transforms Mamuwalde into a vampire, whom he names Blacula and imprisons in a sealed coffin. Mamuwalde's wife, Luva (Vonetta McGee), is also imprisoned and dies in captivity. In 1972, the coffin has been purchased as part of an estate by two interior decorators, Bobby McCoy (Ted Harris) and Billy Schaffer (Rick Metzler) and shipped to Los Angeles. Bobby and Billy open the coffin and become Prince Mamuwalde's first victims. At the funeral home where Bobby McCoy's body is laid, Mamuwalde spies on mourning friends Tina Williams (Vonetta McGee), her sister Michelle (Denise Nicholas), and Michelle's boyfriend, Dr. Gordon Thomas (Thalmus Rasulala), a pathologist for the Los Angeles Police Department. Mamuwalde believes Tina is the reincarnation of his deceased wife, Luva. On close investigation of the corpse at the funeral home, Dr. Thomas notices oddities with Bobby McCoy's death that he later concludes to be consistent with vampire folklore.
Two sisters, Kitty (Barbara Bouchet) and Evelyn, are cursed by a family painting depicting a hundred year-cycle in which a Red Queen is raised from the dead to kill seven times. After Evelyn seemingly perishes and multiple killings ensue, their niece Franziska (Marina Malfatti) and Kitty start to suspect that Evelyn may be the Red Queen.
Four Atlanta businessmen, Lewis Medlock (Burt Reynolds), Ed Gentry (Jon Voight), Bobby Trippe (Ned Beatty) and Drew Ballinger (Ronny Cox), decide to canoe down a river in the remote northern Georgia wilderness, expecting to have fun and witness the area's unspoiled nature before the fictional Cahulawassee River valley is flooded by construction of a dam. Lewis, an experienced outdoorsman, is the leader. Ed is also a veteran of several trips but lacks Lewis' machismo. Bobby and Drew are novices.