The producers originally planned to film the opening scene at a Catholic hospital, but the hospital they were interested in using did not want to affix a faux gargoyle to the building. Thus, the shot was relocated to Heritage Hall, a building that had been both a post office and a Royal Canadian Mounted Police office in the past. At the last minute before filming, city workers began tearing up a sidewalk on the very spot where the producers planned to film the scene; these caused a panic among the producers, but the construction crew assured the show that the construction would be completed before the show's scheduled shooting time, which it indeed waswith only two hours to spare. Additional exterior shots were filmed at an alley near Bonanza Meat Market, the walls of which were painted to match those of Heritage Hall.