On parade day, the local members of the Orange are out in strength but an assassin's bullet, which may have been intended for Mayor Hopkins, kills an Alderman. The police have conflicting reports of where the gun shot came from but Murdoch quickly locates the room from where the gun was fired. Brackenreid orders Murdoch to round up the usual trouble makers - mostly Irish Catholics - but he makes little headway. Murdoch sees Dr. Ogden for the first time since his return and her protégé Dr. Emily Grace conducts the autopsy and is impressed with her interpretation what happened. The police have confiscated all of the cameras from parade watchers and one of them seems to point them to their man. It's not that simple however as Murdoch uncovers that more than one shot was fired.