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.
In 19th century Paris, a maniac abducts young women and injects them with ape blood in an attempt to prove ape-human kinship but constantly meets failure as the abducted women die.
In this murder mystery, sexy blonde film star Irma Gladden is found dead in her car after shooting the last scene in her film, "Falling Star" at Eminent Studios. The suspects are numerous due to her free and easy lifestyle and messy romantic affairs. Among them are Grace Sibley the jealous wife of her director, Warren Sibley, her drunken actor husband, Andre Leighton, her screenwriter boyfriend, Rex Forsythe, and her first husband, Robert Worth. Also on hand to help solve the mystery are visiting reporter Bob Adair, Irma's secretary, Valerie Christine, and policemen Captain Sommers and Sergeant Delaney.
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.
A lovely dame with dangerous lies employs the services of a private detective, who is quickly caught up in the mystery and intrigue of a statuette known as the Maltese Falcon.
Infamous burglar "The Bat" commits a daring jewelry theft despite heavy police presence. Soon after, a bank theft occurs, which may be the work of the criminal as well. Meanwhile, Cornelia Van Gorder has various people arrive at her old mansion, including her niece, Dale, a bank employee, and police detective Anderson. When guests start turning up dead, Cornelia begins to suspect that The Bat may be lurking around the estate.
Margaret Holt and her brother Victor set out to smash a narcotics ring responsible for their father's death. Young reporter John Howell and eccentric mystery writer Winthrop Clavering help unravel the truth about the murder.
When a woman is convicted of murder, one of the jurors selected to serve on the murder-trial jury believes the accused, an aspiring actress, is innocent of the crime and takes it upon himself to apprehend the real killer.
After a vaudeville performer is murdered backstage, framed-up evidence lead the police to arrest a troupe member. At his trial, Hermann, a Scandinavian clown known as Beppo, is the lone juror holding out against conviction and pleading for his innocence and acquittal.
Mrs. Ramsey sent Jean Oliver to prison on a false charge. To get even, Jean (disguised as Madame Mystera) plans to kidnap her daughter and turn her into a thief. Love entanglements with a gangster known as "The Fox" and newspaperman Grant complicate her plans.
A beautiful showgirl, name "the Canary" is a scheming nightclub singer. Blackmailing is her game and with that she ends up dead. But who killed "the Canary". All the suspects knew and were used by her and everyone had a motive to see her dead. The only witness to the crime has also been 'rubbed out'. Only one man, the keen, fascinating, debonair detective Philo Vance, would be able to figure out who is the killer.
Rich old Cyrus West's relatives are waiting for him to die so they can inherit. But he stipulates that his will be read 20 years after his death. On the appointed day his expectant heirs arrive at his brooding mansion. The will is read and it turns out that Annabelle West, the only heir with his name left, inherits, if she is deemed sane. If she isn't, the money and some diamonds go to someone else, whose name is in a sealed envelope. Before he can reveal the identity of her successor to Annabelle, Mr. Crosby, the lawyer, disappears. The first in a series of mysterious events, some of which point to Annabelle in fact being unstable.