Four explorers are summoned to Peru by the brilliant physicist Dr Thorkel. They discover a rich source of radium and a half-mad Thorkel who shrinks them down to one-fifth their normal size when they threaten to stop his unorthodox experimentation.

A boy finds it difficult to live up to his father's reputation at his school.

The second version of Louis Joseph Vance's 1907 mystery melodrama The Brass Bowl. The story of a wealthy world traveler and his evil lookalike, the master criminal Anisty.

Blackie performs in a magic show at a women's prison, which gives an inmate an opportunity to escape.

To bring water to their valley, ranchers have raised money to build a dam. When that money is stolen, Allison suggests the ranchers sell their stock to a friend of his thereby getting the money needed to complete the dam. Roy has a clue that Allison was involved in the robbery and is out to get control of the valley. So Roy and the boys try to delay the sale of the stock while they look for proof against Allison.

Waterfront rivals George Darcy and Big Tim Ryan are both in love with Rose Kelly, and continue their feud when they join the Navy. After the war, they call a temporary truce to take on dope peddlers who are destroying their neighborhood.

A man who has been framed on a murder charge is placed in the custody of a crooked U.S. marshal, who is secretly running a murderous claim-jumping gang.

International con artist Martha Hicks a.k.a. Countess von Claudwig is released from another stay in prison and decides to treat her rheumatism with a stay at her estranged husband's hotel at a Wisconsin spa. There undercover, she checks in on the two daughters she abandoned as infants.

Geoffrey Holden (Lloyd Corrigan) is an elderly con-man who is a lovable old man when providing his beloved granddaughter (Gigi Perreau) with the simple luxuries of life, yet has no qualms when working a racket devised to relieve his victims of their property. Trudy Marshall is the governess of the granddaughter, and is in love with a detective (Michael Duane) who is about to expose the old man's unsuspected activities.

"The Unknown" was the final entry in Columbia’s I Love A Mystery series. A woman hires two detectives to keep her alive long enough to claim her inheritance.

A crusading reporter plans his own arrest and conviction for first degree murder, trying to show that the death sentence should be outlawed when based on circumstantial evidence alone, but his plan goes awry.

Boston Blackie, in the 11th film of the Columbia series, indulges in some wit-trading with a squirmy spiritualist who deals in blackmail, murder and the occult. "Blackie" out to help his pal, "Runt," recover some jewels, finds himself involved in the homicides, and also finds himself as the prime suspect, and now has to find the real culprit in order to clear himself. So "Blackie,", a man of many talents and already a proved magician from cases past, shows he knows a little bit about dancing skeletons, walking phantoms and spiritualism himself, and holds a séance to unmask the murderer.

Though she loves one man, an ambitious Palm Beach girl marries another, whom she thinks is rich. He turns out to be a fraud who thought she was an heiress. She returns to a successful hat shop she maintains catering to socialites. Her true love turns out to be in fact, a rich man who let her think he was not to test her.

A "love-'em-and-leave-'em" sailor hooks up with a dance-hall girl in Paris while waiting for his ship to sail. She falls in love with him, and when his ship leaves port she decides to show up at its next stop and reunite with her lover. However, when she arrives at the ship's next destination, she discovers that her "lover" has already found another local girl to spend his time with. Complications ensue.

A beautiful female doctor visits her small hometown on her way back to Chicago. Her overworked uncle, who is the town's doctor, wants her to stay and help him, and he and a macho test pilot who's fallen for her come up with a plan that involves the pilot faking an illness and being treated by her, with her uncle's "help".

Michael Worthington, an elderly owner of an apiary, befriends an embittered artist, Jamie McFarlaine, who is seeking a divorce from his wife. Jamie falls in love with Alice, but the romance is almost doomed by the gossip-spreading of a meddlesome neighbor.

A once-famous concert pianist has had her career ruined by her alcoholism. Her husband and a member of Alcoholics Anonymous try to help her recover.

French Canadian trapper Victor Raoul returns to the trading post at St. Ignace to find a rival for the affections of Yvonne, his business partner's daughter, in the Marquis Courtière, Parisian representative of the fur company. Raoul quarrels with Fontaine over the visitor's business dealings and his attentions to Yvonne.

A former Navy man attempts to redeem his honor by exposing a shipping tycoon's dealings with the enemy.

The beautiful Florida Keys provide the setting of this adventure that tells the tale of a fun-filled fishing trip that becomes a nightmare when the charter boat is wrecked on an isolated island. Unfortunately, there are very few provisions and the group must fend for themselves. They are eventually assisted by a hermit, but before that one of the group goes insane, and another is eaten by an alligator.

Two Marine pilots vie for romance and glory.

Rebels and a singer cause trouble for two U.S. oil-drillers in South America...

A brash young American aristocrat attending Oxford University gets a chance to prove himself and win the heart of his antagonist's sister.

Jim Holden, a young doctor practicing in Alaska, eagerly awaits the arrival of his new nurse, Anne Webster. All of his previous left within a few weeks by the rigors of the Alaskan winter....

An undercover agent tracks a medicine black market from China to California.

If a shy sailor marries before his next birthday, he will inherit a fortune.

A man tries to redeem himself after ducking out on his comrades before the fatal attack.

Danny Mitchell, feeling that he has been misunderstood by his parents, takes his dog, Rusty, and leaves home, camping out near the trailer of veterinary Dr. Francis Xavier Ray. Gas escapes in the trailer during the night, and Rusty rescues the vet before he is overcome.

A widow's decision to run for mayor kicks off a battle of the sexes in a small town.

A sailor falls in love with the admiral's daughter but finds they can't marry because of his lowly rank.

Modest picture centering on a blunderous jewel heist aboard an ocean liner.

The fourth film in Columbia's "Rusty" series is a lecture against gossiping. A young army veteran comes to town, and Danny and his friends learn that he had spent time in a military stockade for an infraction of a regulation. Danny's friends spread the story all over town. The seriousness of the minor infraction grows with each telling. As a sidebar, Rusty finds a mate and becomes a father.

Merchant seaman Archie Gibbs manages to survive when his ship is torpedoed by a German submarine. Disguising himself in the uniform of a dead Nazi spy, Gibbs is picked up by the Nazi U-boat. He manages to convince the German sailors that he's the spy, and in this guise he tries to rescue a group of captured Allied scientists.

An assistant prosecutor and his spunky friend investigate a suddenly hot case.

On her way to New York for her first stage appearance, Linda Cunningham meets Mame Jarrow, a nightclub singer; Linda later drops by to hear Mame sing, accompanied by their angel, Paul Nicholson, a wealthy roué. Mame gradually comes to realize that Linda is her own daughter, from whom she was separated years before by pious relatives. Using all her wiles, Mame attempts to keep Linda from falling prey to Nicholson, and when all else fails, she sends for Jerry Connor, Linda's small town sweetheart.

A newspaper man, and former jewel thief, is accused of gem theft.

The story of two Naval crewmen who work hard at sea and play harder on land.

"Strong Boy" is offered a promotion for saving a child from being crushed by a trunk, but to the frustration of his girlfriend Mary, he is not ambitious enough to take a white-collar position. But when he thwarts an attempted train robbery and saves the Queen of Lisonia's jewels, he is viewed as a hero and Mary finally agrees to marry him.

Kiplingesque tale of British forces in 19th-century India.

Larry O'Neil, a ship's cook, finds and befriends stowaway Lois Austin, who is a fugitive from a murder charge. The ship's captain, Klodel, also finds her and forces her to do his will as he has received a cablegram and knows she is hunted.

Two friends working a jungle oil field clash when one marries a lady of the evening.

A couple of down-and-out British aristocrats buy an American roadhouse.

Good-natured gambler Marty Black falls into ownership of a booking joint but soon falls on hard times. His one out is a marker for half-ownership in a young thoroughbred, which he quickly calls in. He discovers the other owner to be a young woman from an old horse racing family who wants to protect her colt almost as much as Marty wants to rush him into big races for a fast buck. While they clash, Marty soon comes to understand the human bond with the horses and what it means to be a thoroughbred.

A woman is abandoned by her lover and prostitution is the only way she has to survive.

An elderly business tycoon, believed to be dying, decides to give a million dollars each to eight strangers chosen at random from the phone directory.

As a boy, Tom Morley, was forced to watch the killings of his foster parents and the abduction of his foster sister. When he reaches manhood he joins the Texas Rangers and becomes very good at tracking down outlaws; whereby, he is given the nickname "The Falcon". He finally tracks down his long lost foster sister who has become a spy for the outlaws.

A cowboy and a wild horse find they have some things in common: both have enemies out to get them and both must save their mates from danger.

Marianna Miller, who together with her sister Sarah pounds the pavements, looking for a job. After a period of starvation and deprivation Marianna is hired as secretary to duplicitous businessman Philip Hancock.

While a ship captain is at sea dealing with a mutiny among his crew, his wife is at home having an affair with his best friend.

Woman Wise is a 1928 American silent comedy drama film directed by Albert Ray and starring William Russell, June Collyer, and Walter Pidgeon.

This film concerns a youth torn between his fatherly gangland mentor and the beautiful, virtuous daughter of a police detective.

A financier decides to take a vacation somewhere where nothing can disturb him. He travels to the south of Spain, to a small village where he lives a primitive life. A chance meeting with a young American sociologist who works to guide women towards a healthier and more comfortable life change the pace of his life.

A Broadway musical comedy star tires of the same old grind and flees the city. She runs into the skipper of a showboat who befriends her, and they make plans to put together a musical revue. But a competing carnival owner hatches a scheme to put an end to the show before it begins.

Frederick, Prince of Pilsen, rebelling against his coming marriage with Princess Bertha of Thorwald, meets Hans Wagner, a brewer, and his daughter Nellie. The brewer, mistaking the prince for the son of a friend, asks him to join in a banquet. Hans becomes intoxicated, dresses up in a uniform, and is then mistaken by a coachman for the prince and brought to the palace