You can find official streaming options and more information on the Balthazar IMDb page or through French broadcaster TF1+ Cinema.
: The season picks up after the explosive finale of Season 3. Balthazar is under intense scrutiny, facing potential legal consequences and a damaged reputation. His mental state is more fragile than ever as the ghosts of his past—including Lise and his complex relationship with Maya—continue to plague him. Balthazar.s04.HD1080p.WEBRip.Rus.RuDub.tv
: This confirms the audio is a Russian professional or semi-professional dub, rather than original French with subtitles. Where to Watch You can find official streaming options and more