In harrowing documentary My Underground Mother, a woman finds out what really happened to her mother in the war In harrowing documentary My Underground Mother, a woman finds out what really happened to her mother in the war W hen journalist Marisa Fox was a young girl, her mother would regale her with stories of her own youth, all of which roiled with drama and consequence. When she was a 13-year-old girl living in Poland in the late 1930s, on the brink of the Nazi occupation, her mother told