Guest Stars James McKenna as Sgt. Don Brady David McKail as Dr. Mackenzie David Gooderson as Derek Simpkins, Pathologist Robert Glenister as DS Terrence Reid Joanne Froggatt as Anne Dermot Crowley as Dr. Bennet Colin Farrell as Lawrence Dale Brewer Bill Fellows as James Ingram Chris Gascoyne as Dr. Bill Hughes David Horovitch as Jameson Sophie Thursfield as Louise Ingram Michael Moreland as PC Prentice Frank Kovacs as Dr. Retnik Heidi Monsen as Mrs. Stevenson Clive Hayward as Paul Hobday Arkie Whiteley as Dr. Helena Gibson