A Korean War vet returns to his job as a railroad engineer and becomes involved in a sordid affair with a co-worker's wife following a murder on a train.

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.

Another amazing find from our friends at Cine-Clasico, "Vier um die Frau" is a 1921 Fritz Lang film found in the Brazilian film archives. The period intertitles are in Portuguese but the plot is not difficult to follow, particularly with the assistance of the invaluable Herr Graf Ferdinand Von Galitzien, whose blog entry on the film (link) follows :
The merchant Yquem buys his dear wife a beautiful jewel with matching earnings in a place where the city's underworld trades in fake and stolen jewelry. By chance, Yquem spots a man with whom his wife had an affair in the past. Yquem follows him to a hotel where he will write him a letter imitating his wife's hand writing. The letter invites the man to a public place where Yquem can spy on them and try to discover whether there is still something between them.
This early Fritz Lang film, "Vier Um Die Frau" (Four Around a Woman) was found by chance some years ago at the "Cinemateca De Sâo Paulo", a great present for the German aristocracy and even for the longhaired moviegoers, because it prefigures much of "Dr. Mabuse", (corruption in the upper class-a very habitual practice-unscrupulous upstarts, blackmail, low class criminals, social tension.) and in the opinion of this German aristocrat, provides one of the most outstanding titles of Lang's first period. This film has excellent editing that gives vigour, speed and emotion to a story of an underworld rife with treachery and betrayal as well as a complex tale of unrequited love. The film builds to a crescendo of narrative strength that reminds one of episodes of "Die Spinnen" made by Herr Lang a year before.
The acting is exceptional and the performers resist the temptation to overacting that might be expected in such melodrama. As the heroine, Carola Toelle is especially good and admirably conveys the doubts, secret desires and frustration that her character suffers. An excellent counterpoint is provided the character of her friend and confidant, a perfect vamp, who provides bad advice and is without scruples, quick to use flirting to build up her social position... Rudolf Klein-Rogge has to be mentioned, as his performance makes one recall the exceptional character Dr Mabuse, that he will immortalise two years later. The excellent main actors are given equally good support in the minor roles.
It is worth mentioning as well the great photography of Otto Kanturek and the film production by Ernst Meiwers and Hans Jacoby. The importance of "Decla-Bioscop"'can be seen in the first rate production values that are so abundant in the film (great manors, hotel lobbies, the stock exchange, etc) and on the other hand the realistic depiction of less auspicious surroundings: ragged and wretched slums streets filled with the kind of characters you might expect in such places. A minor point but also a real curiosity is the inclusion of a poster for another "Decla Bioscop" production that can be glimpsed in a theater lobby.

Set in the eighteenth century, Moonfleet is about John Mohune, a young orphan who is sent to the Dorset village of Moonfleet to stay with an old friend of his mother's, Jeremy Fox. Fox is a morally ambiguous character, an elegant gentleman involved with smugglers and pirates.

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.

A power struggle ensues after the death of media magnate Amos Kyne, whose corporation has been turned over to his sole heir, his foppish son Walter. Rather than run the company himself, Walter decides to let the heads of its three divisions fight it out for control. Their assignment is to score an exclusive on a serial killer who is terrorizing women in New York. The Kyne organization's newspaper dubs him "The Lipstick Killer." If a resourceful someone can identify him even before the police do, Walter Kyne will reward him with the title of executive director. One of the three, newspaper editor John Day Griffith, has an ally in high-profile reporter Edward Mobley, who also does reports on Kyne's television network. While wire-service chief Mark Loving recruits star writer Mildred Donner to be his eyes and ears, a third contender for the top job, Harry Kritzer, carries on a secret affair with Dorothy, who is Walter Kyne's wife....

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.

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.

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.

Upon waking up to the news that the man she’d gone on a date with the previous night has been murdered, a young woman with only a faint memory of the night’s events begins to suspect that she murdered him while attempting to resist his advances.

A western based on the story "Gunsight Whitman" by Silvia Richards. Vern Haskell, a nice rancher, seeks out to avenge his fiancé's death when she is killed during a robbery. His revenge leads him to Chuck-a-luck, Altar Keane's ranch set up to hide criminals, and he finds more than he bargains for.

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.

1928 film by Fritz Lang

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.

1919 film by Fritz Lang

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.

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.

A scientist discovers that there's gold on the moon. He builds a rocket to fly there, but there's too much rivalry among the crew to have a successful expedition.

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.

An embittered woman seeks escape in marriage, only to fall for her husband’s best friend.