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 Chris Gascoyne as Dr. Bill Hughes Bill Fellows as James Ingram Frank Kovacs as Dr. Retnik David Horovitch as Jameson Dermot Crowley as Dr. Bennet Sophie Thursfield as Louise Ingram Michael Moreland as PC Prentice Colin Farrell as Lawrence Dale Brewer Clive Hayward as Paul Hobday Heidi Monsen as Mrs. Stevenson Arkie Whiteley as Dr. Helena Gibson