It should have been an open and shut case. Canada's leading radio talk show host came to the door of his luxury condominium, his hands bloody, and said to the newspaper deliveryman, "I killed her." Yet, the discovery that the victim was a self-destructive alcoholic, the presence of strange fingerprints at the crime scene, and the refusal of the accused to say anything--even to his attorney--lead to a hotly contested murder trial.