I found this film excellent. Set in Berlin, it follows the relationship between German author Erich Kästner and a fatherless boy from the late days of the Weimar Republic to the end of WWII. Kästner is best known for writing children's books, including Emil and the Detectives and Das doppelte Lottchen (the inspiration for Disney's The Parent Trap), but he wrote for adults, too. A pacifist, he watched his books be burned at the massive Bebelplatz book burning in 1933.
The film is an interesting portrayal of the Weimar Republic and of the choices children and adults made as the Nazis rose to power.
It is included in Amazon Prime Video.