In a chaotic 19th-century Paris teeming with aristocrats, thieves, psychics, and courtesans, theater mime Baptiste is in love with the mysterious actress Garance. But Garance, in turn, is loved by three other men: pretentious actor Frederick, conniving thief Lacenaire, and Count Edouard of Montray.

Captain Justin Mollenard works for a company that sells armaments to the Far East. After an eventful stay in Shanghai, where he and his cargo are the victim of a malicious attack, he returns to his hometown of Dunkirk. Mollenard receives a frosty welcome from his wife Mathilde, who resents the way in which he has neglected his family for so many years. Mollenard’s only wish is to get back to sea as soon as he can, but a sudden heart-attack leaves him paralysed and entirely in his wife’s power...

The exploits of Chief Police Inspector Chabrier, first before the invasion of France in May 1940 as he fights against spies preparing the coming the Germans, particularly Emmy de Welder, the alleged manager of the Rouen hospital. Later, Chabrier and his men go underground and resist the occupiers whatever the price to pay. When the Liberation comes Chabrier resumes his activities at the French National Police.

An indigenous uprising in British controlled Iraq threatens the route to India, as a lobe triangle develops among the expatriates.

In a lost village in Lapland, Gérard comes to the aid of his friend Anders, in conflict with his father, a rich owner of gold mines.

The early days of the French Revolution, as seen through the eyes of the ordinary citizens in Marseille and the royal court, including King Louis XVI and Marie Antoinette.

A gang of drug pushers is rampant on the French Riviera. The police has been informed and arrests an accomplice who is about to collect the drugs dropped off from a yacht. This person happens to be a public figure of a nearby village...

André Garnier, a young pianist, who was sent to deportation following a denunciation, absolutely wants to find his informer. He falls in love with Hélène, the mistress of a wealthy industrialist, Bernier, in whom he soon discovers the man who once sold him to the Gestapo. Bernier is soon found murdered. André deflects suspicion on Jacques, the victim's secretary. Hélène and André's affair ends up being discovered by the police, who seem to see in it the motive for the crime. André surrenders to justice.

A young man is hired by an industrialist, while a secret hangs over his birth. His boss's wife turns out to be his mother, who hides the truth from him.

Saint-Maurice, an ordinary peaceful village, lived healthily so much so that the local doctor's practice was scant. But that was before Dr. Parpalaid retired and was replaced by a charlatan by the name of Knock. A real genius this one, for he soon managed to persuade everyone that they were ill. And not only didn't they resent him but they even loved their physician, who made a fortune and brought prosperity to the village by turning it into a big hospital.

Barnes, the mate of the 'Portland', is the object of the hate of the whole ship's crew. His mistress is murdered shortly before the departure and suspicion naturally falls on him. Some time later, Jeff Cooper, the skipper, falls to his death in the middle of the night. Once again Barnes is suspected and the mate has to resort to force to maintain his authority on board. During the stopover, Barnes is interrogated and finally cleared. He is even appointed captain of the 'Portland' in replacement of Jeff and can marry his best friend's daughter.

Orphan Virginia is left destitute following her father's death and her uncle's alcoholism; she finds refuge with bohemians but is forced to flee, eventually finding romance and a life-altering experience that triggers surreal dreams.

Having lost his memory due to serving in World War I, Gaston has spent the past 15 years in a psychiatric hospital. Due to his large disability pension fund, several families claim him as their missing son. Gaston is introduced to the Renaud family by the Duchess Dupont-Dufort and her lawyer. The Renaud family attempt to revive Gaston's memory with stories of his past, but he is apalled by some of the things he hears and dislikes the man he is supposed to be.

A legend about the Malveneur family tells of how their ancestor sold his soul to the devil and was cursed: man by day, wolf by night. The last of the Malveneurs is a scientist who carries out strange experiments on... nobody knows exactly what the does in the underground. The wife has a heart condition, her sister-in-law is a authoritarian lady. And nights in the old castle are not exactly peaceful.

A young reporter solves a mystery crime. The fictional reporter is Joseph Rouletabille. He works on a complex, and seemingly impossible, crime in which the criminal appears to disappear from a locked room.

A Nazi spy has stolen a gas mask filter of formidable efficiency in Paris. Two agents from the 2nd office have the task of going to take him back to Berlin.

A mother kills a very vile character, Prince Panin, with whom her adopted daughter has fallen in love and who has married, for her money, the natural daughter.

Pierre Gilieth has committed a murder in Paris. He flees to Barcelona, where he runs out of money. So he joins the Spanish Foreign Legion. He meets there two fellow countrymen, Mulot and Lucas. He tries to forget his fault... but Lucas's friendship soon appears to be less unselfish...

Political turmoil convulses 19th-century Russia as Razumov, a young student preparing for a career in the czarist bureaucracy, unwittingly becomes embroiled in the assassination of a public official.

A person who had usurped the identity of a famous writer of detective stories was killed in the train. Why and by whom?