The attack in the girls' locker room is shot and scored as a mini-homage to the shower murder in Alfred Hitchcock's "Psycho". Both the visual imagery and the music are strongly suggestive of the scene in the Hitchcock film.
This story introduces Larosière's daughter Juliette, played by Flore Bonaventura. The character reappears in the later episode "Le Couteau Sur la Nuque", but played by a different actress.