Jeux de glaces (based on They Do It with Mirrors). Doctor Bousquet heads a reintegration center for offenders. His family is not so fond of the presence of criminals and the sick in their home. Commissioner Laurence leads the investigation into two murders in the center and tries to get rid of curious journalist Alice Avril without much success. There is not much love in the family of doctor Bousquet. Are it actually Dr. Bousquet's patients who are dangerous?

Elvire Morenkova has everything you can dream of. She is a handsome, successful actress and well-to-do, yet she commits suicide while shooting a movie. Commissioner Laurence is looking into the matter. Elvire was very wealthy, she had several lovers and the women hated her, enough reason to be killed. The recording of the film continues and daring Avril takes over the role of Elvire.

Two murders are happening and the only witness there is is a dog. A castle is ravaged by ghosts who say they are going to reveal the name of the murderer. For Laurence, who doesn't believe in ghosts, this place stinks, especially now that her mother wants to get involved. As if that is not enough, her mother has also got it in her head to pair Avril, whom she loves, with her son. So a lot of headaches for the Commissione

The man in the brown suit. Top-secret microfilms are stolen during a Russian ballet performance at Lille Opera. Aware that the troupe includes Soviet spies, the French Secret Service calls in Swan Laurence. He becomes the opera's new secretary, Brigitte.

The Mirror Crack'd. The famous actress Blanche Dulac narrowly escapes a murder attempt on her film set. With a depressed Swan Laurence turning to drugs after the death of Dr Maillol, the love of his life, Alice and Marlène go undercover and join the film crew.

Haute couture crime. Patricia, a designer's assistant at a leading Paris fashion house, is fragile and unstable. So, when she confesses to a murder, Swan Laurence suspects she's been manipulated. Alice is outraged at their working conditions and starts a strike just before a major fashion parade.

Les meurtres ABC (based on The ABC Murders)—As a serial killer taunts Larosière, the great detective’s career could be the next casualty.

Am stram gram (based on Ordeal by Innocence)—After the death of a beloved philanthropist, suspicion falls on her brood of adopted children.

La maison du péril (based on Peril at End House)—When a beautiful heiress is targeted for murder, Larosière loses his heart—and nearly his life.

Le chat et les souris (based on Cat Among the Pigeons)—While investigating murder at a fancy boarding school, Larosière is haunted by his past.

Je ne suis pas coupable (based on Sad Cypress)—When death stalks a women’s retreat, a reluctant Lampion goes undercover.

Un cadavre sur l’oreiller (based on The Body in the Library)—With Larosière accused of strangling a prostitute, Lampion tries to clear his name.

1939. Simon Le Tescou is a cruel and tyrannical man. For his 70 years, this rich Breton businessman, decided to reunite his whole family. Edward, his eldest son, who lives at the castle with his wife Edith and dares not stand up to his father. Antonin, the youngest, a deputy on the verge of ruin, whose new fiancée, Madeleine, unexpectedly invites herself. Victor, the youngest, an Olympic champion who accepted Simon's invitation for the sole purpose of settling accounts with his father, whom he has not seen for years. Inès, his granddaughter from Spain, whom everyone did not know existed. And a friend of the family, Eloi, a young African doctor whose research is funded by Simon. But on the night of his birthday, while he refused to feast with his guests, Simon Le Tescou is savagely murdered in his double-locked room.

Commissioner Larosière, a brilliant criminologist, and a young novice inspector, Emile Lampion, are in charge of the investigation. Under the fire of questions from Larosière, each other's alibis fall one by one and the police arrive at the conclusion that all could have killed Simon Le Tescou. While Edith and Victor fall back into each other's arms as in their youth, Louise tells Antonin, her lover, that she is carrying her child. He is overjoyed but Madeleine, who overheard their conversation, does not hear it that way.

Following her fall, Louise lost her baby; as for Madame Dupré, who narrowly escaped death, she remains paralyzed and mute. Larosière and Emile decide to settle in the castle to set a trap for the murderer. The night of the ambush, Alix narrowly escapes an assassination attempt ...

Despite Eloi's efforts, Edouard succumbs to his injuries. Meanwhile, Commissioner Larosière, who is recovering from his injury in hospital, summons Inès. He is determined to make him confess the murders of Simon Le Tescou and Madame Dupré.

To conclude this season and celebrate the ten years of the cult series, Blandine Bellavoir offers a special gift to the five million faithful viewers, all ages: a guided tour on the set of this season. The opportunity to return to ten years of scenaristic and visual discoveries, cult scenes and human complicity.

Through a collection of interviews and an immersion of several weeks on film sets in the North of France, Thibault Pomares tells the great story of the cult series "The Little Murders of Agatha Christie". On the programme, twelve years of time travel with testimonies from the creators, directors, set designers, costume designers and leading actors of the series (Samuel Labarthe, Blandine Bellavoir, Élodie Frenck, Antoine Duléry, Marius Colucci, Émilie Gavois-Khan, Arthur Dupont, etc.).

1:15 p.m. on Saturday was invited behind the scenes of a successful series: "The Little Murders" by Agatha Christie, whose new season will begin on January 29 on France 2 and France.tv. The detective series has not only changed heroes but also times for a leap into the 70s, colorful, unbridled and which gives pride of place to feminism ...