Guest Stars Alison O'Donnell as DS 'Tosh' MacIntosh Steven Robertson as DC Sandy Wilson Lewis Howden as Sgt Billy McCabe Erin Armstrong as Cassie Perez Anne Kidd as Cora McLean Julie Graham as Rhona Kelly Marnie Baxter as Jenny Belshaw Archie Panjabi as Asha Israni Saskia Reeves as Freya Galdie Sara Vickers as Leanne Randall Colette O'Neil as Bella Anna Chancellor as Phyllis Brennan James Cosmo as Arthur McCall Jack Greenlees as Craig Cooper Ciarán Hinds as Michael Maguire Brandon Scott as Logan Mark Cox as Tommy Monro Edward M Corrie as Ben Brennan Benjamin Cawley as Edison Crispin Letts as Headmaster John Stahl as Eric the Boatman Caroline Guthrie as Mrs. Whelan Barbara Rafferty as Alice Paul Donnelly as Arthur's Heavy Finlay Welsh as George Liam Brennan as Mike Brennan Fletcher Mathers as Bridal Shop Owner