Guest Stars Ben Hunter as Joseph Booth Albane Courtois as Eugénie Pierre Jessica Baglow as Rachael Hemingway Tom Lewis as Thomas Sowden Thomas Howes as John Booth Joel Morris as William Hardcastle Saul Marron as James Mackenzie Emma Paetz as Catherine Rawson Dexter Hughes as Henry Hardcastle Natalie Gavin as Alice Hardcastle Daniel Betts as Hinscliffe Maizie McDonagh as Charlotte Booth Rocco Haynes as Billy Hardcastle Niamh Hustler as Hannah Booth Andrew Watson as Captain Donald Cameron Matilda Holt as Martha Booth Michael Sheldon as Vicar Hugh Stubbins as Secretary Luis Soto as Georges Cuvier