All 12 jury members who sent an innocent man to the gallows are gathered together for a demonstration of how convictions can be made on circumstantial evidence. During the proceedings, a phony murder is quickly revealed as the real thing.

The owner of a large mansion in the country throws a costume party for some of his friends. However, the party turns sour when he is found stabbed to death in a closet. The police and a guest try to discover who committed the murder.

A beautiful blonde makes a career out of seducing and then blackmailing wealthy married men. She is found murdered after demanding a $5000 payoff from her latest victim, and the detective investigating the case finds out that she was involved in a lot more than just blackmail.

A reporter helps the police investigate the murder of a disagreeable and philandering actor who is found strangled to death in his theater dressing room with its door and window locked from the inside.

Philo Vance, accompanied by his prize-losing Scottish terrier, investigates the locked-room murder of a prominent and much-hated collector whose broken Chinese vase provides an important clue.

Megalomaniacal rancher is a law unto himself, until a Ranger is called-upon to bring him to justice.

A handsome radio singer has it all--fame, money, adoring fans--but what no one knows is that his accompanist, a hunchbacked piano player, is actually the voice behind the arrogant, abusive "singer"'s fame. The two men fall for the same girl, and when the singer turns up dead, suspicion falls upon his assistant and the girl.

A phony spiritualist hypnotizes the daughter of a wealthy banker in a scheme to swindle the banker out of his money. A reporter investigating the swami discovers the plot, determines to expose it.

A man known to be a mute is suspected of committing a murder, as he was noticed at the scene. However, witnesses saw and heard him talking as he was leaving the scene of the crime. The police must determine if he is the actual killer or if he is being framed.

An airliner makes a forced landing at night in the desert. The passengers and crew take refuge in a nearby deserted house. Soon some of the passengers are found murdered, and one of the passengers reveals himself to be a detective who was guarding one of the murdered passengers, who was carrying a bag of diamonds--which is now missing. The detective must find out which of the passengers is the killer.

Underworld king Lee Lother has been killed aboard a ocean liner, several people could have been the murderer. There is his mistress Anya Roysen, a married woman, who was jealous of his flirtations with his old moll, night club singer Sally Marsh, who had agreed for one last night with Lother, to get her younger brother Ned out of the Lother's clutches because he has faked Lother's name on a check to pay his gambling debts. Then there is Sally's new flame Jimmy Brett, a con man and gentlemen thief, who has out-tricked Lother in a fixed poker game, and is, together with shorty, after the ladies jewels. Inspector McKinney suspects Joe Saunders, a recently released convict, who was arrested due to some tips by Lother, but Ned and Sally insist that they committed the crime alone.

When a movie actor is shot and killed during production, the true feelings about the actor begin to surface. As the studio heads worry about negative publicity, one of the writers tags along as the killing is investigated and clues begin to surface.

Thirteen years after a dinner party in which the thirteenth guest failed to arrive, the remaining guests are being murdered one by one, and their bodies being placed at the same dinner table in the appropriate seats they occupied thirteen years prior.

A man wrongfully convicted of murder escapes custody and goes in search of the real killer. The problem is that he only has one clue to go on.

Eight people are invited by an unsigned telegram to a penthouse apartment, where they find themselves locked in and greeted by their unknown host's voice via the radio, who explains that before the night is over each one will be die unless they manage to outwit the ninth guest, Death.

During a séance at an elderly millionaire's house, the millionaire is murdered. The detectives investigating the crime discover that everyone who was at the séance had a motive for killing the man.

A reporter itching to get off the boring gardening "beat" gets a chance to investigate a series of arson fires that have been plaguing the city. He believes the fires are tied into a web of political corruption involving a wealthy businessman, the mayor and the police chief. Complicatins ensue when the girl assigned to help him turns out to be the businessman's daughter.

Ruth Earlton has come home to her ancestral mansion to claim her inheritance. Accompanied by her boyfriend, she discovers that her father died suddenly under suspicious circumstances. Now it's her turn, as her deranged and relentless uncle targets her for death with the help of his wife and son, plus a very unhappy ape.

Guests at a luxury hotel are horrified when they witness a man literally "disappear into thin air." The vanished man's relatives hire a detective, who goes to the hotel to investigate the disappearance.

Former lovers get together to clear themselves when the police suspect them of murder.

Bodies start mysteriously disappearing from the city morgue. An investigator tries to determine what is going on.

A range lawman (Ken Maynard) unmasks a black-cloaked phantom killer (Sheldon Lewis).

Doctor Smith and his wife, Mary,depart a riverboat and are met by Phil Talbot. Phil informs Dr. Smith that Jessup, the only other white man in the village, has died while the doctor and his wife were off on a two-day holiday. Unknown to Smith, Jessup and his partner, Ross King, had a large cache of ivory tusks in the jungle, and he had told Phil about it. Meanwhile, Mary Smith has decided to steam-boat down the Congo River to Capetown for an extended holiday. Kuba, King's gun-bearer, asks Smith to write a letter to King, currently residing at a New York City Explorer's Club, and advise him that his partner has died. Talbot sends a letter to his stateside sweetheart, Diane Cameron, and her father, asking them to come to Africa and join him on an ivory-treasure expedition, and replenish their family-fortune lost in the recent stock-market crash. What Mr. Cameron and Diane don't know about Talbot is that his years in Africa have unhinged him...

Bank teller Barry Webster is driven to stealing bank funds by his mother-in-law who continually nags him about forcing her daughter Muriel to live in poverty...

During a horrific storm at sea, the crew realizes that there is a murderer among them who is killing them off one by one.

A fake psychic suddenly turns into the real thing when he meets a young beauty. (TCM)

A feud between two gangs in Chinatown breaks out into a tong war.

A group of passengers are trapped in a runaway Pullman car.

Ellery Queen's vacation is interrupted when murder strikes next door to his oceanside cabin.

Investor Robert Norman murdered before meeting. Police investigate. Journalist Claire Haines pursues story to impress editor. Intertwining narratives of crime solving and reporting unfold.