On 20 July 1944, an assassination attempt was made on the life of Adolf Hitler; its failure and that of the coup d'état planned to follow, Operation Valkyrie, lead to the arrest and execution of thousands of people. In his film, "The Traitors' Children", Christian Weisenborn presents harrowing encounters with the children of the executed conspirators, while also taking a look at his own family history. His parents belonged to a group of anti-fascists, which the Gestapo called the "Rote Kapelle" (the red chapel). Weisenborn's parents survived, but 52 of their friends were hanged in Plötzensee in 1942/43. Weisenborn also interviewed their sons and daughters.

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