Guest Stars Lisa McGrillis as Sandra McKay Lorn MacDonald as PC Taylor Clarke Maureen Beattie as Carol Kendrick Orla Russell as Emily Kendrick Aaron Connell as Elliot Campbell Laurie Brett as DC Gemma Darlington Lilac Jackson as Charlotte Kendrick Felicity Keenan as Iris Kendrick Bradley Connell as Lewis Campbell Stuart Bowman as Dr. Mark Denham-Johnson Lindy Whiteford as Ruth McKenzie Grace Calder as Tessa Wells Jamie Michie as Simon Wells Jack Greenlees as Luke Richmond Julie Miller as Lynn Denham-Johnson Gordon Brown as DCI Spencer Collins Lewis Gribben as Dylan Denham-Johnson Ron Donachie as Callum McKenzie Hannah Donaldson as IVF Doctor Leah Byrne as IVF Nurse Seline Hizli as Sasha Thompson Julia Taudevin as Reverend Mary Dunbar