Guest Stars Emma Fielding as Nicolette Natalie Simpson as Sister Simplice Lorcan Cranitch as Chief Inspector / Prefect of Police Erin Doherty as Fabienne Mailow Defoy as Little Cosette Lily Newmark as Sophie Patricia Allison as Marguerite Sean Cernow as Phillipe Ben Fox as Montreuil Official Woody Norman as Young Marius James Garnon as Bamatabois Sienna Barnes as Little Éponine Emmanuel Goffin as Little Gavroche Bert Steketee as Fauchelevent Meabh Maguire as Sceptical Woman Amani Johnson as Little Azelma
