Burglar Nat Harbin and his two associates set their sights on wealthy spiritualist Sister Sarah, who has inherited a fortune -- including a renowned emerald necklace -- from a Philadelphia financier. Using Nat's female ward, Gladden, to pose as an admirer and case the mansion where the woman lives, they set up a perfect break-in. Things get complicated afterwards.
Career criminal Johnny Clay recruits a sharpshooter, a crooked police officer, a bartender and a betting teller named George, among others, for one last job before he goes straight and gets married. But when George tells his restless wife about the scheme to steal millions from the racetrack where he works, she hatches a plot of her own.
The cruel and abusive headmaster of a boarding school, Michel Delassalle, is murdered by an unlikely duo -- his meek wife and the mistress he brazenly flaunts. The women become increasingly unhinged by a series of odd occurrences after Delassalle's corpse mysteriously disappears.
The tranquility of a small town is marred only by sheriff Tod Shaw's unsuccessful courtship of widow Ellen Benson, a pacifist who can't abide guns and those who use them. But violence descends on Ellen's household willy-nilly when the U.S. President passes through town... and slightly psycho hired assassin John Baron finds the Benson home ideal for an ambush.
Frank Johnson, a sole witness to a gangland murder, goes into hiding and is trailed by Police Inspector Ferris, on the theory that Frank is trying to escape from possible retaliation. Frank's wife, Eleanor, suspects he is actually running away from their unsuccessful marriage. Aided by a newspaperman, Danny Leggett, Eleanor sets out to locate her husband. The killer is also looking for him, and keeps close tabs on Eleanor.
In New York, Sheila Bennet and her spouse, Matt Krane, are trying to unload a trove of rare jewels they smuggled into America from Cuba, but the police are hot on the couple's trail. Meanwhile, government officials begin a desperate search for an unknown individual who is infecting the city with smallpox.
Ralph Cotter, a ruthless criminal, escapes violently from a farm prison. Then, he seduces a dead inmate’s sister, gets back quickly into the crime business, faces corrupt local cops who run the city’s underworld and meets a powerful tycoon’s whimsical daughter.
Wealthy writer Stephen Byrne tries to seduce the family maid, but when she resists, he kills her. Long jealous of his brother John, Stephen does his best to pin the blame for the murder on his sibling. Also affected by Stephen's arrogant dementia is his long-suffering wife Marjorie.
Frank Bigelow is about to die, and he knows it. The accountant has been poisoned and has only 24 hours before the lethal concoction kills him. Determined to find out who his murderer is, Frank, with the help of his assistant and girlfriend, Paula, begins to trace back over his last steps. As he frantically tries to unravel the mystery behind his own impending demise, his sleuthing leads him to a group of crooked businessmen and another murder.
Through a fluke circumstance, a ruthless woman stumbles across a suitcase filled with $60,000, and is determined to hold onto it even if it means murder.
Wide-eyed and poor young Leonora weds an obsessive millionaire named Ohlrig, but the marriage is loveless. Even worse, Ohlrig seems to have manic, violent tendencies. Eventually, young Leonora escapes her unhappy life and begins working with New York City doctor Larry Quinada, who she soon falls for. Unfortunately, Ohlrig refuses to grant his wife a divorce, and things get even darker for Leonora when she realizes she's pregnant with his child.
A gang hold a family hostage in their own home. The leader of the escaped cons is bothered by a recurring dream that the doctor of the house may be able to analyze.