Paris is prey to an invisible terror against which the police can do nothing: a sinister organization that sows chaos and death. The intrepid journalist Philippe Guérande and his partner embark on a long crusade to put an end to the crimes of the Great Vampire and Irma Vep, his dangerous accomplice. (A ten episode movie serial.)

Georges de Frileuse is a partier who inherits a castle and a ruby ​​necklace when his aunt dies. On Twelfth Night, he invites a few friends over, but a series of mysterious figures arrive instead of them.

An eighteen year old boy is pressured by his god-mother to begin instructions to become a priest, but he changes his plans when he arrives in Paris and sees how much fun he can get there.

A disillusioned rich American bets with a railroad worker that the latter will not be able to spend the 600,000 francs a month that he will pay him for a year. All the railwayman's attempts to win his bet fail but his daughter luckily conquers the American.

A very nice young man, Sylvain Renaud is "surrounded" by two bad guys who want to drag him into some very dirty business.

Maryse blackmails her former lovers by threatening to mention their names in her memoirs. But a real blackmailer appears and cashes the checks for him.

Jeanne supports supports his family on his modest salary. Her boss is arrested for fraud. Jeanne is forced, out of poverty, in the street.

Now that their parents are ruined, Jacques Eyssette and his younger brother Daniel, are driven to fend for themselves. Jacques becomes the secretary of a marquis who exploits him by making him work so hard that his health gets damaged. Daniel, on his part, is hired as a supervisor and Latin teacher in a school in the province. It soon happens that he is in a bad situation too as, after being subjected to repeated harassment, he ends up being fired. Daniel then decides to join Jacques in Paris, hoping to embark on a literary career. Unfortunately, Irma Borel, an actress, sets her sight on him and drags him into a life of vice.

This murder mystery is set in a Parisian cafe and examines the mysterious murder of a famed journalist and extortionist who is killed at his table in the cafe. Though the prime suspects are gathered together( including his wife and her lover, the gun-runner, the creditor, and a playboy) and all of them have motives, none of them did it. So whodunit?