Guest Stars James McKenna as Sgt. Don Brady David Gooderson as Derek Simpkins, Pathologist Jon Sotherton as DC Mark Howard Marc Warren as Graham McArdy Danny Webb as Karl Edwards Camille Coduri as Pauline Venables Emma Cunniffe as Michelle Robins Colette Brown as WPC Claire Toms Linda Henry as Sue Venables Juanne Fuller as Jo Thorn Ysobel Gonzalez as Linda Brook