In the New Mexico desert, Police Sgt. Ben Peterson and his partner find a child wandering in the desert and sooner they discover that giant ants are attacking the locals. FBI agent Robert Graham teams up with Ben and with the support of Dr. Harold Medford and his daughter Dr. Patricia 'Pat' Medford, they destroy the colony of ants in the middle of the desert. Dr. Harold Medford explains that the atomic testing in 1945 developed the dangerous mutant ants. But they also discover that two queen ants have flown away to Los Angeles and they are starting a huge colony in the underground of the city. When a mother reports that her two children are missing, the team and the army have a lead to follow. Will they arrive in time to save the children and destroy the colony?

Hatsuko Umabuchi is a widow who runs a prosperous geisha house in present day Kyoto. Her daughter Yukiko returns from Tokyo following a failed suicide attempt, after her lover found out about her mother's profession. Hatsuko is having a discrete affair with the young Dr. Matoba, who looks after the geisha girls. The doctor is attracted to Yukiko, who initially despises him and everything connected with the geisha house. However Yukiko gradually changes her views.

In 17th century Kyoto, Osan is married to Ishun, a wealthy miserly scroll-maker. When Osan is falsely accused of having an affair with the best worker, Mohei, the pair flee the city and declare their love for each other. Ishun orders his men to find them, and separate them to avoid public humiliation.

Too many years in the Orient have made a bitter man of Dr. Dan Maynard (Edmond O'Brien), an American surgeon, and too little emotional stability has tarnished the Tangier-born Rita King (Ruth Roman).

Two detectives are investigating a robbery in which $300,000 was taken. Their investigation leads them to the main player and they find the cash, but one of them has meanwhile fallen hard for a woman with expensive tastes, and though he desperately wants to keep her, he knows that a cop's salary isn't going to be enough for her.

Two gold prospectors persuade the owner of a hitherto worthless mine to reconsider his decision to cease excavation. While on a joint dig with the owner and his daughter, one of the prospectors unexpectedly strikes gold, but the precious discovery creates conflict between the duo and prompts unwanted attention from a rival intent on acquiring the gold for himself, at any cost.

Johnny Victor's in love with an international businessman, Louis Galt, who is actually the head of a syndicate which mints illegal coins for the Continental market. But she soon learns that Galt has been deceiving her, and has no intentions of divorcing his wife. So she meets Pierre Clemont, a potter, and falls for him (onscreen and off). Into this little slice of life comes Emil Landosh, a confidence man, and he steals a bracelet that Galt had given Victor and uses it to pay a debt. Enter a twist-of-fate, and it ends up in Galt's hands. Strained credibility aside since many, many films depend on beating the coincidental odds, Galt assumes that Landosh is Victor's lover, and this isn't a good assumption on his part since Landosh kills him and then makes it appear as if Victor and Clermont did the deed.

From her window, Cheryl Draper (Barbara Stanwyck) sees a neighbor, Albert Richter (George Sanders), murder a young woman. When Cheryl goes to the police, they cannot find any evidence because Richter has hidden the body. Cheryl persists in her claims without evidence, leading concerned policeman Larry Mathews (Gary Merrill) to worry that she is becoming obsessed. After Richter becomes aware of Cheryl's accusations, he conspires to make it appear that she is insane.

Coadapted by The Gordons from their novel Case File FBI, Down Three Dark Streets stars Broderick Crawford as a no-nonsense FBI agent. Hoping to avenge the death of his partner Kenneth Tobey, Crawford almost single-handedly takes on the three investigations which Tobey had been pursuing. One involves a gang of car thieves; the second concerns a fugitive gangster; and the third deals with an extortion racket. Of the three leading ladies–Martha Hyer, Ruth Roman, Marisa Pavan–Ms. Pavan turns the most fascinating performance as the blind witness to a murder. The climax is staged around the fabled "Hollywood" sign that dominates the hills bordering the film capital. Most of the production personnel involved with Down Three Dark Streets would later set up shop at Dick Powell's Four Star Productions.

Professional photographer L.B. "Jeff" Jefferies breaks his leg while getting an action shot at an auto race.

The whole village mourns when General O'Leary, owner of a hunting estate in South Ireland, is killed in an accident. His nephew, Jasper O'Leary, takes over the state and soon has aroused the displeasure of all, with the exception of Serena McGluskey, as much a schemer as he is a cad. Led by Thady O'Heggarty, the villagers plot to drive Jasper away. They use the occasion of "O'Leary Night", when the ghost of the first O'Leary walks the halls, to create general chaos.

Colonial tea planter John Wiley, visiting England at the end of World War II, wins and weds lovely English rose Ruth and takes her home to Elephant Walk

A vicious cop kills a bookie's runner and steals $25,000 from the corpse. He then frames everyone in sight in order to keep the money to buy a new home for his would-be lounge singer girlfriend.

Crown City, Colorado, may become a ghost town; the only gold left is in Ute Indian land. Gary Brannon, an honest man who hates Indians, joins a mission to try for mining concessions; but crooked Frank Walker, more realistically, plans to start an Indian war. Gary and his wiser father Sam have their hands full keeping the peace, and Walker has lots more schemes up his sleeve. More plot twists than the average Western.

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