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 Erin Armstrong as Cassie Perez Finn Den Hertog as Drew Alison Peebles as Vicky Kirkland Sophie Rundle as Sophie Gemma Chan as Hattie James Lindy Whiteford as Jackie Haldane Geraldine Alexander as Gwen James Alexander Morton as Joseph Wilson Claire Rafferty as Anna Haldane Jim Sturgeon as Ronald Haldane Martin Wenner as Professor Paul Berglund James Greene as Andrew Haldane Sandra Voe as Mima Wilson Uncredited Jane Moncrieff voices Radio Announcer