Guest Stars Kara Tointon as Young Elsie Jason Watkins as Stanley Fox Henry Lloyd-Hughes as Young Elias Calam Lynch as 20s Archie Dainton Anderson as Little Archie Linda John-Pierre as Mae Peter Ellis as Elias Leach John Moraitis as Doctor Hartman Oaklee Pendergast as Teen Archie Samantha Colley as Barbara Harris Nathan Clough as Official Olivia Brody as Young Jennifer Kelly Coughlin as Liz Barbara Barnes as Mary Fox Akil Largie as Luke Ellie MacDowall as Jennifer Grant Mary Stewart as Lucy Cartwright
