Det. Chief Inspector James Taggart	.... Mark McManus
Detective Sergeant Michael Jardine	.... James MacPherson
Detective Constable Jackie Reid	.... Blythe Duff
Annie Gilmour	.... Ann Mitchell
Dr. Douglas Nielson	.... Ken Drury
Morag Nielson	.... Lorna Heilbron
Derek Amlot	.... Michael Cochrane
Professor Hutton	.... Jeremy Young
Christine Gray	.... Leone Connery
Colin Murphy	.... Dougray Scott