One Sunday in Yvetôt, August 1950. Annie is playing outside in the sun. Her mother steps out of the grocery to chat with a customer, a few metres from her. The two women’s conversation is perfectly audible and the scraps of an unparalleled confidence are etched forever in Annie’s memory. Before she was born, her parents had another daughter. She died at the age of six from diphtheria. Annie will never hear another word from her parents about this unknown sister, nor will she ever ask them a single question about her: their family unit has formed in the image of its vanished...