Winthrop Clavering a mystery writer, is continually ridiculed for the fiction of the crimes he depicts, so he decides to solve a case himself. To that end, he determines to find the slayer of Pedro Alvarez, who whispered before dying that his assailant was a woman. At the City Refuge for Homeless Girls, Clavering obtains the assistance of Margaret Holt, the sister of Victor Holt, the district attorney. Margaret, it is revealed, was abducted by Juanita, a member of a gang of white slavers led by Alvarez. After escaping from a brothel, Margaret became Alvarez' stenographer, hoping to gather secret information on his gang. While searching for evidence, Margaret was surprised by Alvarez, whom she killed. Finally, Clavering captures the gang, clears Margaret, and encourages her romance with cub reporter Jack Howell. This film is presumably lost.
On the trail of counterfeiters Detective Craig is on their trail. Suspicion falls on James Dalton who passes bad money through unsuspecting "fences." Dalton plants bad bills on young Bob Brierly and when it is detected Dalton, as usual, escapes while the innocent Bob is caught and convicted. Upon his release Bob meets Mae Edwards who gets him a job in her bank. When Dalton comes to the bank to case it for a robbery he runs into Bob and tries to recruit him as an accomplice. Bob, who has married Mae, refuses. Dalton causes him to lose his position and because of Dalton’s persistent efforts forces Bob to join the crook. Craig, shadowing Dalton, knows Bob is taking part against his will. Craig foils the robbery and after a motorboat chase Dalton is captured and exonerates Bob.
Penniless aristocrat Yvonne Dupré ekes out a living selling her paintings to a crooked dealer, Leon Naisson, who passes them off as other more famous artists. Leon confides to his unscrupulous model Romildo, that he is attracted to Yvonne. Romildo drugs his lover, fiery Apache dancer Juliette who closely resembles Yvonne, then tries to extort money from Leon to have his way with her. Leon discovers the duplicity but convinces the artist's sweetheart, Dick Gray, that she has been unfaithful. As police close in on Leon, he frames Yvonne by planting forged paintings in her studio. Following Yvonne's arrest, Juliette is informed by her foster sister that she was stolen by gypsies as a child and is actually Yvonne's twin sister. Juliette exposes Leon's operation to the police, reuniting Yvonne and Dick.
Ranch foreman Kerry has boarded with Kitty Tynan and her mother for five years in western Canada, his past is a mystery to everyone. He is actually an English aristocrat who lost all his money gambling and left the country in search of work. Kerry and his friend Horan own an option on property which crooked lawyer Burlingame is trying to secure. Burlingame's cohort Logan murders Hogan, and is caught and arrested. In the trial, Burlingame forces Kerry to admit his past, and succeeds in preventing Kerry from receiving bank assistance. When Kerry is shot, Kitty opens a letter from Kerry's wife that he had been carrying for five years, and cables her. Kerry's wife arrives and informs him that his last bet in England had turned out to be a $20,000 winner. Kerry is able to use the money just in time to foil Burlingame and secure the property, thus winning prosperity and the affections of his wife.
A DA's son gets involved in a drug-related murder, and it's up to his father and sister to get him out.
A man breaks into a flat, startling the occupant. They argue about the new girlfriend of the 'burglar', who's come to get her stuff. Then a third man bursts out of the cupboard...
A detective saves his boy assistant from a bank swindler after escaping a fire by overhead cable.
When his buddy is murdered a dedicated cop, goes after the gang responsible.
During the illness of her father, Toni Carter, Milly takes his place as station agent. Both Dave Snowden, a freight engineer, and Bill Mailey love her. Bill, a land express courier, who distrusts and dislikes Dave sees that both the girl and her father favor his rival and decides to disgrace the station agent and his daughter.
A chorus girl breaks a deal with her boss by marrying the rich man she was supposed to ruin.
A trusted laundromat employee is sent to the bank to cash the payroll but is robbed by a couple of thugs then locked up in a closet and cuffed with shirts hand and foot. One thug writes a note on an old cuff to his friend to meet him at the station. When the landlady comes in, she takes that cuff with other wash and sends it at once to the laundry where its discovery makes possible not only the rescue of the prisoner and the capture of the outlaws, who are cuffed in steel.
Young thief “The Bat” to distract an old bookseller, while his partner, “The Fly,” robs the till, purchases a book at random. Later, after a chase and escape to the Devil's Roost, Old Meg's refuge for thieves, he takes the book from his pocket and is about to throw it aside when the title attracts him, "Electricity Made Simple." Intrigued, the volume opens a new life to him and in time enables him to rescue the bookseller’s daughter Bess when she falls into trouble.
Humanitarian Roberta induces her father to hire former convict, Bill, as his gardener. When she leaves on vacation, Bill steals her jewelry and eventually sells a brooch to her boyfriend, Richard, who unknowingly gives it to her as a present.
In Africa a typist is framed for killing a diamond smuggler who betrayed her father.
A reporter and a detective team up to solve the murder of a nightclub singer who had been involved in a divorce scandal.
Young Edyth Vail, believes her fiancé Allen Morris may have committed a murder, asking Ashton Kirk to investigate the crime. The fiancé admits he went to the David Hume's home to retrieve plans for a submarine, invented by his scientist father and stolen by the murdered man, but Allen claims he left the home before retrieving the plans. Kirk uses a train conductor's punch ticket to discover the identity of the murderers, one of whom is mute, and sets a trap to apprehend the suspects.
A young man's journey into adulthood, love, and ambition, inspired by a serial by George Randolph Chester exploring themes of love, ambition, and self-discovery, set against the backdrop of the Roaring Twenties.
Millionaire Joshua Barker insists that his daughter, Faith, must marry Phil Langhorne, a man that neither likes, and Faith is in love with and eager to marry her childhood sweetheart, John Temple.
A man assists a woman to dispose of the body of her stepfather....
The secret formula for the world's most powerful explosive has been stolen from the U.S. government. William Brown, a clerk who aspires to be a detective, has just received his badge from some anonymous Midwestern agency, and manages to get himself embroiled in the intrigue.