Guest Stars Alison O'Donnell as DI Alison "Tosh" McIntosh Steven Robertson as DC Sandy Wilson Lewis Howden as Sgt Billy McCabe Mark Bonnar as Duncan Hunter Erin Armstrong as Cassie Perez Julie Graham as Rhona Kelly Archie Panjabi as Asha Israni Sara Vickers as Leanne Randall Colette O'Neil as Bella James Cosmo as Arthur McCall Anna Chancellor as Phyllis Brennan Jamie Michie as Lowrie Kate Donnelly as Grace Ace Bhatti as Calvin Sarwar Alison Peebles as Vicky Kirkland Kevin Mains as DS Iain Boyd Edward M Corrie as Ben Brennan Claire Dargo as Kelly Paterson Sandy Welch as Calvin's Lawyer Gregor Firth as Prison Officer
