Tracy has gone to Uxbridge to talk to Patrick McDonagh, the son of a murdered arson investigator from Montreal, in the hope that he may be able to shed some light on the murder in Toronto of one of his father's colleagues. Patrick has been brought to Toronto by Janette, who became his guardian after his father's death. However, Janette has left him visiting his aunt in Uxbridge. She is not staying there herself. To assist Tracy, Patrick therefore shows her a treasured photograph of his guardian.