It's possible the film was never released publicly, or information about the cast may be limited due to its niche nature.
To find more information, you can try these resources:
* IMDb: Search for "Alle Macht den Kindern (2013)" on IMDb. This website often has cast lists for films, even lesser-known ones.
* German film databases: Explore German film websites or databases that might have information about this film.
* Online film communities: Try searching for the film title on forums or social media groups dedicated to German cinema.
If you can provide any additional information, like the director or genre of the film, it might help narrow the search and find more information.