Guest Stars Pippa Nixon as Sarah Niamh Algar as Orla Maguire Steven Cree as Andrew Bentham Jessica Gunning as Pam Clare Holman as Colonel Reese Tony Pitts as Lennox Angélica Aragón as Veronica Samuel Leakey as 7 Year Old Caden Orton O'Brien as 10 Year Old Caden Heather Craney as Emily Guy Rhys as Young Officer Quique Medina as Ignacio Cortes Jay Simpson as DCI Turner Roberto Mateos as Felipe Alarcon Eddie Toll as DC Reeves Fanny Gautier as Patricia Magana Emma Dewhurst as Journalist