A huge, alien structure resembling an inverted cone, appears in the woods outside a small rural town. Sent from Washington to investigate the origin of the mysterious object, a team of investigators discovers that intelligent parasites from inside the "cone" can attach themselves to humans' nervous systems and control their minds, taking control of the authorities and workers, making communication with the outside world impossible, and leaving the responsibility of stopping the invasion up to seven people who have thus far been able to avoid possession by these creatures from parts unknown.
A wealthy man hires a poor girl to play his mistress in order to get more attention from his neglectful family.
A group of people traveling on a stagecoach find their journey complicated by the threat of Geronimo, and learn something about each other in the process.
A faded star is suspected of killing a studio executive.
Officer Karl Torok's best friend, Count Alvinczy, is elected president of the Hungarian cabinet. Meanwhile, Alvinczy's wife, Madalaine, receives a message from a blackmailer, threatening her husband. When the blackmailer winds up dead, Madalaine appears to be the most likely suspect. Torok, however, knows the case is more complicated than it seems and dedicates himself to revealing the truth behind the mystery.
When reporter Dan Miller is once again late to meet his girl friend, Helen Murdock, because he is working on a story, Helen breaks up with him. Later, in an effort to reconcile with her, Dan misses an appointment with the district attorney, and is fired when his editor learns that the district attorney was murdered in Dan's absence. The man suspected of the crime, Mitts Coster, is rumored to be traveling to Europe aboard an ocean liner. While Dan's friend, photographer Snapper McGillicuddy, fetches Helen to the boat, under the pretense that Dan is leaving town to forget her, Dan searches the ship for Mitts, whom he does not recognize. When Helen arrives, Dan feigns illness, and she admits her love for him. When Helen learns of Dan's ruse, however, she angrily hits him with a package that a passenger gave her when she boarded the ship. The package contains a passport for Dorothy Madden, who greatly resembles Helen, and $2,000 dollars.
While a distinguished astronomer is giving a lecture in a planetarium, a shot rings out and one of the audience members is found dead. A tough detective and a brassy female reporter lock horns as they both try to break the case.
Gypo Nolan is a former Irish Republican Army man who drowns his sorrows in the bottle. He's desperate to escape his bleak Dublin life and start over in America with his girlfriend. So when British authorities advertise a reward for information about his best friend, current IRA member Frankie, Gypo cooperates. Now Gypo can buy two tickets on a boat bound for the States, but can he escape the overwhelming guilt he feels for betraying his buddy?
This romantic comedy takes place on an ocean liner. One of the few unattached passengers is heiress Joan Foster. Joan finds herself in the arms of the ship's second officer. Little does she know that he has been hired by her father to keep other men away from her.
The story of a boy, a dog, and a man. The boy discovers he is heir to a shipping line, and travels to Los Angeles, accompanied by inventor/radio operator Bob Whitlock and Irene Blaine. Their journey is aided by Pal, a wolf dog.
A wealthy girl hires a male escort to make one of her male friends jealous. She spreads rumours about her character that makes her popular amongst all bachelors in the city including her friend.
Marianne falls in love with con man Valentine who uses their relation to get her father's endorsement on a money-raising scheme. He runs off with the money and Marianne, later dumping her. Her sister Laura loves Dr. Lindley although she knows he loves Marianne. Marianne returns and marries a wealthy young man, and Lindley turns his love toward Laura.
The daughter of a wealthy industrialist wants to take over the company when her father retires, but the father--an old-fashioned sort who doesn't believe that "girls" belong in business--is planning on leaving the company to her wastrel playboy brother. In order to prove to her dad that she can handle the job, she disguises herself as an ordinary "working girl" and gets a job in her dad's plant. There she meets and falls in love with a clerk. She brings the young man home to meet her folks, but during the evening the family safe is robbed, and all signs point to her new boyfriend.