Episode 5 (S01E05)

Mademoiselle, the French governess, becomes more and more uneasy about Mrs. Appleyard's unpredictable actions, especially after learning that Sara was picked up by her guardian without any staff witnessing the event. As Mademoiselle digs deeper for the truth, the Sergeant heads to Melbourne for a final meeting with Irma, uncovering a hidden promise made by the missing girls.