The story for this one follows two sisters coming of age in France just as World War II is breaking out. As German forces sweep in and occupy their homeland, they must struggle with moral choices as they join the resistance. Though the narrative in the book is fictional, it's based on the true-life story of Andrée de Jongh, a Belgian woman who helped crashed Allied pilots escape from Nazi territory.
Ann Peacock wrote the most recent draft, with MacLaren now working alongside John Sayles to tweak it for Sony's TriStar arm. No release date is in place yet, but it should mark MacLaren's feature directing debut after her frustration with landing the job making Wonder Woman, then leaving after creative differences with Warner Bros. In the interim, she's worked on Bad spin-off Better Call Saul and is also behind the camera for an episode of HBO's upcoming Westworld.