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In a futuristic city sharply divided between the rich and the poor, the son of the city's mastermind meets a prophet who predicts the coming of a savior to mediate their differences.

Siegfried, son of King Siegmund of Xanten, travels to Worms, capital of the Burgundian kingdom, to ask King Gunther for the hand of his sister, the beautiful Kriemhild.

Dr. Mabuse and his organization of criminals are in the process of completing their latest scheme, a theft of information that will allow Mabuse to make huge profits on the stock exchange. Afterwards, Mabuse disguises himself and attends the Folies Bergères show, where Cara Carozza, the main attraction of the show, passes him information on Mabuse's next intended victim, the young millionaire Edgar Hull. Mabuse then uses psychic manipulation to lure Hull into a card game where he loses heavily. When Police Commissioner von Wenk begins an investigation of this mysterious crime spree, he has little to go on, and he needs to find someone who can help him.

After the suspicious suicide of a fellow cop, tough homicide detective Dave Bannion takes the law into his own hands when he sets out to smash a vicious crime syndicate.

Cashier and part-time starving artist Christopher Cross is absolutely smitten with the beautiful Kitty March. Kitty plays along, but she's really only interested in Johnny, a two-bit crook. When Kitty and Johnny find out that art dealers are interested in Chris's work, they con him into letting Kitty take credit for the paintings. Cross allows it because he is in love with Kitty, but his love will only let her get away with so much.

After a detective is assaulted by thugs and placed in an asylum run by Professor Baum, he observes the professor's preoccupation with another patient, the criminal genius Dr. Mabuse the hypnotist. When Mabuse's notes are found to be connected with a rash of recent crimes, Commissioner Lohmann must determine how Mabuse is communicating with the criminals, despite conflicting reports on the doctor's whereabouts, and capture him for good.

When Kriemhild, thirsty for revenge, marries to Etzel, king of the Huns, she invites King Gunther and his court to visit them, intending to finally take the life of the man responsible of her disgrace.

Joe, who owns a gas station along with his brothers and is about to marry Katherine, travels to the small town where she lives to visit her, but is wrongly mistaken for a wanted kidnapper and arrested.

A seductive woman gets an innocent professor mixed up in murder.

Based partially on the story of Bonnie and Clyde, Eddie Taylor is an ex-convict who cannot get a break after being released from prison. When he is framed for murder, Taylor is forced to flee with his wife Joan Graham and baby. While escaping prison after being sentenced to death, Taylor becomes a real murderer, condemning himself and Joan to a life of crime and death on the road.

Art film producer Jeremy Prokosch, unhappy with the work of his director, hires Fritz Lang (as himself) to direct an adaptation of The Odyssey, but when it seems that the legendary filmmaker is making a picture destined to bomb, he brings in a screenwriter to energise the script. The professional intersects with the personal when a rift develops between the writer and his wife.

During the Nazi occupation of Czechoslovakia, surgeon Dr. Franticek Svoboda, a Czech patriot, assassinates the brutal "Hangman of Europe", Reichsprotektor Reinhard Heydrich, and is wounded in the process. In his attempt to escape, he is helped by history professor Stephen Novotny and his daughter Mascha.

Newspaper men compete against each other to find a serial killer dubbed "The Lipstick Killer".

Stephen Neale is released into WWII England after two years in an asylum, but it doesn't seem so sane outside either. On his way back to London to rejoin civilization, he stumbles across a murderous spy ring and doesn't quite know to whom to turn.

A newspaper publisher, wanting to prove a point about the insufficiency of circumstantial evidence, talks his possible son-in-law Tom into a hoax in an attempt to expose ineptitude of the city's hard-line district attorney. The plan is to have Tom plant clues leading to his arrest for killing a female nightclub dancer. Once Tom is found guilty, he is to reveal the setup and humiliate the DA.

Wealthy writer Stephen Byrne tries to seduce the family maid, but when she resists, he kills her. Long jealous of his brother John, Stephen does his best to pin the blame for the murder on his sibling. Also affected by Stephen's arrogant dementia is his long-suffering wife Marjorie.