Listen to my full interview with MacKay in the podcast player at the top of this article.
Oster was one of the generals planning to arrest Hitler in the event of war against the Czechs.
And there is palpable tension when he is left in the same room as the dedicated resister Hartman, whose own psychological conflicts come out realistically, allowing the audience to feel the tremendous pressure placed on the resistance.
He died on August 26, 1944, at Plötzensee prison.
They were insulted when Hitler, a corporal in the 1914-18 war, assumed the leadership of the armed forces in 1937.
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