The Devil's Riddle

Wealthy Anne Wilmot vacationing along with her aunt Katherine at her fiancé Leon Morse's (Hull) Arizona mountain lodge discovers his plot to destroy a nearby hydroelectric engineering project in order to obtain the land for his railway. She thwarts the sabotage but find herself in a life and death struggle.

A crusader tries to keep a dope dealer from corrupting children.

Visiting his vast properties incognito, Hugh Nichols (Tom Mix) discovers that his land agent (Cyril Chadwick) is forcing Peggy Swain (Clara Bow) and her dad (Frank Beal) off their neighboring ranch. When decent-minded Nichols demands that the agent cease harassing the farmers, the nasty villain blows up the nearby dam, flooding the valley.

The daughter of a count and the son of a shoemaker, both Hungarian, fall in love in America. As they're about to marry, the young woman is called back to Europe. When her betrothed goes after her, difficulties ensue.

A Man Four-Square is a screen version of William McLeod Raine's popular tale of a rancher who finds himself falsely accused of murder while attempting to help a friend in need.

Penniless inventor Jack Saunders, in search of a girl he loves, assumes the guilt for a murder in return for $20,000 and promise of a pardon at the end of a year. When the agreement is not fulfilled, he breaks jail and appears, demanding justice, before the governor, whose daughter, Margaret, committed the crime in self-defense. Saunders prevents her forced marriage to politician Burke, and Margaret, recognizing her lost love, clears his name and is herself exonerated.

Billy Haven, a young rancher, accidentally discovers that clay found on his ranch will, when mixed with water, become the most beautifying mud-pack cosmetic that any young girl, or old woman, could desire. Then the land-grabbers, clay-speculators, cosmetic companies and a show girl or two show up to get a piece of the action.

When young Eva Stanley comes home from college, she finds that her mother is deeply involved in the movement to rescue "wayward" girls. Eva's boyfriend John Gilbert is sent west on a government job, and Eva finds herself lonely and neglected. She is lured onto the yacht of lecherous Leo Spencer, the dissolute brother of the district attorney.

Richard Armstrong, inventor of a carburetor that will make his car a sure winner in a road race, works on a skyscraper for Richard Steele and falls in love with his daughter, Doris. Though Steele prefers Trask, an underworld king, he agrees to discuss marriage if Armstrong wins the prize money.

A US marshal goes undercover to bust up a bunch of rustlers.

A U.S. soldier goes after bandits in California, although it is still owned by Mexico.

A ranch foreman is assigned to escort his employer's daughter from the big city back to the ranch. The girl is carrying the valuable Regent diamond and the pair become the target of a gang of thieves.

Cowboy Ace Cooper, to avoid arrest, becomes a fireman, falls in love with the chief's daughter, Sally Drennan, and wins her in spite of the efforts of a crooked politician to separate them.

Hal Doyle, son of the prison warden, falls in love with a portrait of Mollie Dare, who runs a reformatory for ex-convicts where they may work for honest wages. To win the girl he poses as the notorious Tucson Joe and goes to the reformatory where his reputation causes the other men to fear him. The real Tucson Joe arrives but does not reveal his identity.

After losing his factory job, virtuoso violinist Tommy Breen is inspired by June Norton, who lives in the same boardinghouse to write his song, "When You Smile with Your Eyes in Mine." Song publisher Simon Berg signs Tommy and the song becomes an enormous success. Success goes to Tommy’s head, he forgets June, surrounds himself with Broadway lowlife, spends extravagantly, and becomes infatuated with Mona Merwin, a musical comedy performer. He hits a rough patch, and June asks Berg to help her save Tommy from himself, so he decreases Tommy's royalty checks. Tommy's Broadway friends desert him when the checks stop coming. Now that Tommy has seen the error of his ways Berg sends him to a country cottage he purchased in Flatbush, where Tommy finds June waiting to marry him.

"Happy" MacDonald and his unfaithful wife own a Prohibition era night club. On this eventful night, he is threatened by bootleggers, and the club's star dancer falls in love with a young socialite who drinks to forget a personal tragedy, among other incidents.