Guest Stars Alison O'Donnell as DS 'Tosh' MacIntosh Steven Robertson as DC Sandy Wilson Erin Armstrong as Cassie Perez Bill Paterson as James Perez Stewart Porter as Sgt Billy McBride John Lynch as Frank Blake Anthony Howell as Peter Latimer Susan Vidler as Isobel Tulloch Leigh Biagi as Anna Blake Lorne MacFadyen as Angus Tulloch Ann-Louise Ross as Mary Perez Paksie Vernon as Gina Bradley Julie Hale as Tessa Warren David Ireland as Finlay Caulfield Michael Nardone as Donnie Tulloch David Annen as Bill Warren Keith Ramsay as Joe Blake