It was a secret that had slumbered for years. Until his father’s death, Torkel S. Wächter knew that there was something that the elder Wächter could not or would not speak about. “I understood that there was something hidden in him. He had shown that in a nonverbal way,” said the Swedish author recently. But the few important dates that the younger Torkel knew sufficed to prevent him from getting too close to his father’s taboo. Walter Wächter was born in 1913 as the son of a Jewish family in Hamburg, where he also grew up. During the Second World War, he fled Germany and began a new life in Sweden.