Ducobu, the mischievous student from the Saint-Potache school, returns in a new film titled Ducobu et le Fantôme de Saint-Potache, which premiered in cinemas before the release of the eponymous comic book. The film follows Ducobu (Charlie Garnier Naslin), Professor Latouche (Élie Semoun), and Mademoiselle Rateau (Émilie Caen) as they move into a haunted house, which is inhabited by the ghost of Anatole (Louis de Thier), the school's most notorious troublemaker. The ghost leads Ducobu, Léonie (Antoinette Rougier), their parents, and Kitrish (Gérard Jugnot) into a series of humorous and unexpected adventures. Directed by Élie Semoun, who previously directed four successful films in the series, which have collectively grossed six million admissions, this film takes the characters out of the familiar school setting of Saint-Potache and into a mysterious, magical Halloween-themed world. Élie Semoun emphasized that the film maintains the family-friendly and comedic tone of the series, ensuring that nothing is truly frightening. The cast includes Élie Semoun in three roles: Professor Latouche, his mother, and the ghost of his ancestor. The film features a familiar cast, including Loïc Legendre, Frédérique Bel, François Levantal, and Gérard Jugnot, who reprise their roles. Charlie Garnier Naslin and Antoinette Rougier portray Ducobu and Léonie Gratin, respectively, bringing freshness and energy to the characters. The film includes elements of horror movie tropes, such as those seen in Ghostbusters or The Exorcist, while remaining accessible to younger audiences. Gérard Jugnot noted that his character, Kitrish, takes on a new role as a patrol leader facing a demon, adding a new dimension to the character. The film's haunted house and Halloween decorations were designed by Tom Darmstaedter, the set decorator who worked on the previous films. The film also features special effects, including scenes shot on green screens, to create realistic ghosts and a mysterious atmosphere. The soundtrack was composed by Mathieu Gonet, who drew inspiration from Danny Elfman's work for Tim Burton films. The score features a large orchestra with around forty string instruments. The film aims to delight both nostalgic readers of the comic series and new audiences with its humor, mysteries, and family-friendly adventures. It blends the familiar charm of the Saint-Potache universe with the spooky, imaginative world of Halloween, offering a fresh yet familiar experience for fans and newcomers alike.