Maddie gets Engel's answer to the Resistance's overtures from the café where Engel was supposed to leave her reply.
A bus boy hands Maddie a scarf and asks if it's hers, so she takes it.
When she gets back to the Thibaut's farm, she realizes it's Julie's scarf—and she remembers that Engel is a chemist.
Maddie remembers how her dad's ties used to smell like him, and she tries to smell Julie on the scarf, but there's not a trace left.
Maddie, Mitraillette, and Amélie iron the scarf to bring out the secret message, which says that nineteen prisoners from Poitiers are being transported to a concentration camp. Their bus is going to swing by Ormaie to pick up five more, including Julie.