Guest Stars Lisa McGrillis as Sandra McKay Maureen Beattie as Carol Kendrick Laurie Brett as DC Gemma Darlington Orla Russell as Emily Kendrick Aaron Connell as Elliot Campbell Lorn MacDonald as PC Taylor Clarke Bradley Connell as Lewis Campbell Felicity Keenan as Iris Kendrick Lilac Jackson as Charlotte Kendrick Stuart Bowman as Dr. Mark Denham-Johnson Lindy Whiteford as Ruth McKenzie Grace Calder as Tessa Wells Jamie Michie as Simon Wells Lewis Gribben as Dylan Denham-Johnson Julie Miller as Lynn Denham-Johnson Gordon Brown as DCI Spencer Collins Ron Donachie as Callum McKenzie Evie Sheil as Molly Wells Bhav Joshi as Pathologist