Guest Stars George Anton as Dr. Roddy Armitage Crispin Redman as Judge Rory Richards Annabel Mullion as Pathologist Eleanor Penny Downie as Rachel Mathesson Toby Stephens as Dr. Martin Middlebrook Jeany Spark as Julia Anstiss Seline Hizli as Sara Waldman Lucy Fleming as Mary Wells Sam Graham as Gordon Wells Gareth Williams as Supervisor Liz Hallyburton as Nurse Jerry Lindop as Guy Kerridge Christopher Gilling as John Peters Nicholas Banks as Andy Arthur Wilson as Simon Wells Lawrence Lambert as Postman Amy Yamazaki as Haya Ngama Mike Sengelow as PET Technician Carl Prekopp as Frankie Peter Silverleaf as Tony Wright Ged McKenna as Cal Donnally Rachel Bavidge as Helen Uncredited Robert Glenister voices Opening Narration