Guest Stars Steven Robertson as DC Sandy Wilson Alison O'Donnell as DS 'Tosh' MacIntosh Lewis Howden as Sgt Billy McCabe Mark Bonnar as Duncan Hunter Anne Kidd as Cora McLean Julie Graham as Rhona Kelly Conor McCarry as PC Alex Grant Angus Miller as Donnie Rakie Ayola as Olivia Lennox Catherine Walker as Alice Brooks Derek Riddell as Chris Brooks Titana Muthui as Zezi Ugara John Kazek as Aaron McGuire Lorn MacDonald as Jamie Hayes Gayle Watson as Mary Hunter Robin Laing as Gavin Laird Frances Mayli McCann as Niki Ryan Fletcher as Calum Dunwoody Meghan Tyler as Mags Emma Mullen as Rosie Tracy Wiles as Carla Hayes Owen Whitelaw as Prentice Hayes Isabelle Joss as Catrina Ayanda Bhebe as Daniel Ugara Olivia Barrowclough as Trish