CSI (franchise) Overview Series

| Season | Episodes | Time_slot_EST | Original_airing_Season_premiere | Original_airing_Season_finale | Original_airing_TV_season | Rank_ | Viewers_in_millions_ |
|---|---|---|---|---|---|---|---|
| 7 | 24 | Thursday 9pm/8c | September 21, 2006 | May 17, 2007 | 2006–2007 | #4 | 20.34 |
| 8 | 17 | Thursday 9pm/8c | September 27, 2007 | May 15, 2008 | 2007–2008 | #9 | 16.62 |
| 9 | 24 | Thursday 9pm/8c | October 9, 2008 | May 14, 2009 | 2008–2009 | #4 | 18.52 |
| 10 | 23 | Thursday 9pm/8c | September 24, 2009 | May 20, 2010 | 2009–2010 | #12 | 14.92 |
| 11 | 22 | Thursday 9pm/8c | September 23, 2010 | May 12, 2011 | 2010–2011 | #12 | 13.52 |
| 12 | 22 | Wednesday 10pm/9c | September 21, 2011 | May 9, 2012 | 2011–2012 | #21 | 12.49 |
| 13 | 22 | Wednesday 10pm/9c | September 26, 2012 | May 15, 2013 | 2012–2013 | #25 | 11.63 |