Complex sentence: Many years after the war, the murder of a prostitute in Hamburg in 1965 draws the attention of Interpol Inspector Morand (Philippe Noiret), who owes a debt of gratitude to Grau for not revealing his connection to the French Resistance during the war.
Split into simpler sentences: Many years after the war, the murder of a prostitute in Hamburg in 1965 draws the attention of Interpol Inspector Morand (Philippe Noiret). Morand owes a debt of gratitude to Grau for not revealing his connection to the French Resistance during the war.