Guest Stars James McKenna as Sgt. Don Brady David McKail as Dr. Mackenzie David Gooderson as Derek Simpkins, Pathologist Billy Riddoch as Hammond Barry Jackson as Walter Peters Jason Merrells as Mike Patterson Kate Maberly as Melanie Monkton Julian Wadham as Harry Monkton James Flynn as Paul Mathews Ben McCosker as Steve Nesbit Annette Ekblom as Fiona Monkton Susan Penhaligon as Pam Hartley Michelle Joseph as WPC Ronnie Lonnegan Barrie Ingham as Arnold Harris Jonjo O'Neill as Jeffrey Meadows Michael Cochrane as Babcock, HMI Gerrard McArthur as Paul Harris Sidney Kean as Fabriani Sherry Baines as Jean Harris