Mr. Moto Heads to China on a quest for seven ancient scrolls that reveal the location of Genghis Khan's tomb—a crypt filled with fabulous treasure! But Moto isn't the only one stalking the scrolls—so is a shadowy band of thieves. But when his ruthless rivals go too far, the mild-mannered detective's quest for antiquities becomes a passion for vengeance—because if he can't bring these villains to justice... he'll bring them to their knees.

A movie actor playing a detective gets carried away with his role and starts trying to solve real-life crimes.

Ambitious reporter Torchy Blane guides her policeman boyfriend to correctly pinpoint who shot the man she was interviewing.

Holmes takes a vacation and visits his old friend Sir Henry Baskerville. His vacation ends when he suddenly finds himself in the middle of a double-murder mystery. Now he's got to find Professor Moriarty and the horse Silver Blaze before the great cup final horse race.

Wealthy widow Mrs. Bramson notices that her maid is distracted, and when she learns the girl's fiancé, Danny, is the reason, she summons him in. Mrs. Bramson's niece Olivia takes a liking to Danny, and comes to believe that he may have been involved in the disappearance of a local woman.

A newscaster gets demoted for exposing the town's criminal activities over the airwaves.

Americans Tommy Baldwin and Joe Dugan are hired to transport a fabulous diamond from Shanghai to San Francisco. They will be paid handsomely on success or killed on failure. The diamond is stolen as they take possession of it.

Returning from European exile where she avoided testifying against her criminal associates, a former singer with a tell-all diary is murdered to insure her silence.

Get ready for a Gold Medal murder mystery! This "tense, thrilling mystery" ('California Congress of Parents and Teachers') pits Charlie Chan against international spies who are using the Berlin Olympic games as the perfect cover...for cold-blooded murder!

Although Charlie and Lee are in Monaco for an art exhibit, they become caught up in a feud between rival financiers which involves the Chan's in a web of blackmail and murder.

Drummond manages to save a woman from jumping in front of his car but she runs away with his car. He traces her and she asks him to help her out of a dangerous situation.

Drummond's girlfriend is kidnapped by his enemies and he along with his friend Nielsen, an inspector from Scotland Yard, follow the trail and try to rescue her from the kidnappers.

Paris, 1937. Winckler kills his enemy Gordon, a Chicago mobster, from the stage of a Parisian music hall, where he performs telepathy. He pays another artist, Helene, so that she tells the police they've spent the night together, which doesn't fool Callas, the police officer who investigates the murder. He hires one of his fellow officers in order to seduce Helene.

A Swedish princess boards an ocean liner in Europe en route to an acting career in America and finds herself getting inconveniently attached to a bandleader returning home. To complicate matters, a blackmailer on board apparently knows she is not who she claims to be - and he has his sights set on other passengers with secrets of their own. In the meantime an escaped killer has stowed away under someone else's identity, and is killing again to cover his tracks; five international police detectives on board are heading the investigation to find him. When evidence points to the princess and bandleader, they must find the killer themselves - before he finds them.

A doctor is driven into an investigation of sinister goings-on at a horse race track by his mystery writer ex-wife.

The film begins in a BBC studio with the 100th edition of "In Town Tonight". Flotsam and Jetsom open with a "topical number". Then there is an interview with a distinguished actor, which dissolves into a performance of one of his famous melodramas about a wicked moneylender etc.

Lawyer Perry Mason is summoned to the Laxter mansion in the dead of night to write granddaughter Wilma out of invalid Peter Laxter's will, to keep her from marrying suspected fortune hunter Doug. Peter dies in a mysterious fire and Laxter's two grandsons, Sam Laxter and Frank Oafley, inherit his estate on the condition old caretaker Schuster and his cat Clinker are kept on. When cat-hating Sam threatens Clinker, Perry steps in and learns Laxter's death was suspicious and the family fortune and diamonds are missing. Schuster's found dead in his basement apartment, Laxter's nurse Louise is murdered with Schuster's crutch, and circumstantial evidence brings Doug to trial for Louise's death. Mason's investigation produces a surprise witness who turns the trial around. Written by Sister Grimm

15-Chapter Serial about a scientist that discovers a formula for making synthetic gold and the people that want it.

In the second screen version of The Maltese Falcon, a detective is caught between a lying seductress and a lady jewel thief.

Marion Hastings returns to her father Dan's cattle property in western Queensland after being away in Europe for fifteen years. She is treated with hostility by her father's foreman, Dick Drake, and her father's neighbour, Don Lawton.

Famous private detective Tip O'Neil is summoned by telegram to the estate of old friend Paul Harding, but finds the telegram was sent by Paul's attractive secretary, Amy Hutchins. Paul admits his dog was shot by extortionists to show they mean business, and shows Tip some threatening notes they sent. That night, Paul's ward, Corinne, is kidnapped by two gangsters and her driver is found dead the next morning. The kidnappers contact Tip demanding $200,000, which is delivered according to instructions. Awaiting the return of Corrine, Tip learns her fiancé, Gene Leland, is an ex-convict, and he also investigates why a thug, Maratti, was found prowling around the grounds, and why Paul's brother-in-law, Jim Glenray, was seen leaving the estate late the night before. And when the chauffeur is murdered with Amy's gun as he was about to confess some complicity, Tip has to piece together various clues to pinpoint the culprits.

An escaped lunatic, a mysterious swami, and various lovers all have designs on a famous opera singer.

A meat inspector sets out to rid his town of payoff deals affecting the quality of meat being sold to the public.

Dan Adams resigns his position as prosecutor on the district attorney's staff and sets out to clean up a gang of fake-accident racketeers. He gets a job with an insurance company, and assures the company president he will get the goods on the gang or die in the attempt. At the company offices, he meets Carol Carter and she, believing he is a shyster (possibly redundant) lawyer in the employ of the racketeers gives him as little help as possible. Dan visits his brother Eddie, who is mixed up with the gang and tries to make him break away. Eddie is belligerent but finally, because of the pressure brought by Dan and his wife Tonia, agrees to go straight. The gang, led by "Duke" Trotti, fears he will squeal and they kill him, plus they make his death look like an accident and plan to collect on it. Dan is closing in on the gang when Carol, who is now his assistant, comes up with some conclusive evidence, but "Duke" has plans to get rid of her before she can give the information to Dan.