Thursday, September 12, 2013 ratings — Finales: Rookie Blue. New episodes: Big Brother, The Million Second Quiz, and The X Factor. Specials: 2013 CBS Fall Preview. Reruns: Shark Tank, The Big Bang Theory, The Vampire Diaries, America’s Next Top Model, Hollywood Game Night, and Elementary.

* The X Factor percentages represent the change when compared to last year’s Thursday premiere on 9/13/12.

These are the fast affiliate ratings. The percentages represent the change since the previous original episode. (Percentages aren’t given for reruns or specials.) To see past ratings for a particular show, click the show’s link. The show pages are updated with the daily final ratings when they become available. Those pages include season averages to date.

What were you watching last night? Original network episodes, reruns, cable, or something else?