Justin Hartley's hit CBS series Tracker has enjoyed including onscreen nods to Jensen Ackles' Supernatural. Based on Jeffery Deaver's novel The Never Game, Tracker follows a survivalist named Colter (Hartley) who travels the country helping people and law enforcement tackle a variety of mysteries. Tracker expanded Colter's world by introducing Us to some of his family members - including brother Russell played by Jensen Ackles. Ackles' appearance came after his long run opposite Jared Padalecki on Supernatural from 2005 to 2020.