When Colter (Justin Hartley) suddenly disappears during his search for a missing father, Reenie recruits his brother, Russell (#Supernatural's Jensen Ackles), for help in #Tracker Season 2, Episode 2, "Ontological Shock," airing Sunday, Oct. 20 at 8:30/7:30c on CBS. Follow TVLine on... Twitter: http://www.twitter.com/tvline Facebook: http://www.facebook.com/tvline Instagram: http://www.instagram.com/tvline