Guest Stars Orla Bayne as Young Holly Mark Strepan as Rory Sawyer Emun Elliott as Alistair McDermid Evie Brassington as Young Georgia Chris Fulton as Charlie Lamont-Smith Sorcha Groundsell as Elizabeth Smith Daisy Littlefield as Lisa Grace Greatorex-Watson as Milly David Elliot as DS Tom Gillespie Siobhan Redmond as University Dean Clare Yuille as Invigilator
