A device, system and method for determining incident objects in secondary video is provided. An electronic device: plays, at a display screen, a primary video from a primary video source located at a primary location; determines an incident type associated with the primary video; determines incident object(s) associated with the incident type; detects a particular incident object in a secondary video from a secondary video source located at a secondary location within a threshold distance of the primary location, the particular incident object appearing in the secondary video within a threshold time period from a current playback time of the primary video; determines a relative direction of a location of the particular incident object from the primary location; and controls the display screen to render a particular visual indicator of the particular incident object over or adjacent the primary video at a position indicative of the relative direction.