Guest Stars Alison O'Donnell as DS 'Tosh' MacIntosh Steven Robertson as DC Sandy Wilson 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 Titana Muthui as Zezi Ugara Lorn MacDonald as Jamie Hayes John Kazek as Aaron McGuire Frances Mayli McCann as Niki Ryan Fletcher as Calum Dunwoody Robin Laing as Gavin Laird Kirsty Stuart as Morag Dunwoody Natali McCleary as Denise Tracy Wiles as Carla Hayes Owen Whitelaw as Prentice Hayes