He fled to Holland, but eventually wound up in Theresienstadt, where the Nazis forced him to direct a movie about how "wonderful" life was there. Once filming was finished, he was sent to Auschwitz and gassed.
This past year I lost a friend, Johann ‘John’ Bos. He was 88 and the sole survivor of his family and his wife, Julia, had survived internment at Theresienstadt.
John had an outstanding sense of dark humor and treated me to some of the funniest Holocaust humor. Coming from anyone else it would seem insensitive but coming from him you could see it was cathartic and I would not have denied it to him.