Maddie is now living with the Thibauts as Katherina Habicht, Maman Thibaut's cousin's daughter from Alsace.
She's staying in Etienne's old room and has begun using one of his childhood notebooks to write in.
One day, as she and Amélie and Mitraillette are out on their bicycles looking for possible landing sites, they run into Etienne.
Mitraillette does a good job of lying to him, and he buys the story about a distant cousin.
He and Amélie get into a fight, and because he's a jerk, Etienne starts telling his little sister what they do to prisoners who don't cooperate.
Maddie doesn't understand any of this conversation until the Thibaut sisters relay it to her later, and then she's really upset because she knows if Julie isn't dead, she's a prisoner of the Gestapo, and it's Maddie's job to find her.