As World War II looms on the horizon, Pope Pius XI calls on a humble American priest to help him challenge the evils of Nazism and antisemitism. But death intervenes, and a new pope, Pius XII, carries out a very different response to Hitler and the Holocaust.

HOLY SILENCE tells the dramatic story of the Vatican's actions – and inactions – during World War II and finally reveals the truth about “Hitler’s Pope”, Pius XII, accused of being a Nazi sympathiser.