Det. Murdoch is proceeding with plans to build a house and create a happy life for he and wife, Dr. Julia Ogden. But unbeknownst to the detective, Ogden is suffering silently from guilt for killing her tormentor, the psychotic Eva Pearce. In an effort to distract herself from her anxiety, Ogden is introducing her newly arrived friend Lady Suzanne Atherly (Samantha Bond, Downton Abbey) and her daughter Elizabeth to Toronto society at a debutante ball. Unfortunately, the elegant event turns deadly when one of the ladies vying to marry Toronto's most eligible bachelor is murdered. The situation worsens when a destructive fire begins to rage throughout downtown Toronto distracting the police from the case and putting Ogden in grave danger.