Guest Stars Laurie Brett as DC Gemma Darlington Lorn MacDonald as PC Taylor Clarke Lisa McGrillis as Sandra McKay Maureen Beattie as Carol Kendrick Orla Russell as Emily Kendrick Aaron Connell as Elliot Campbell Bradley Connell as Lewis Campbell Felicity Keenan as Iris Kendrick Lilac Jackson as Charlotte Kendrick Stuart Bowman as Dr. Mark Denham-Johnson Grace Calder as Tessa Wells Lindy Whiteford as Ruth McKenzie 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