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_ |
|---|---|---|---|---|---|---|---|
| 1 | 23 | Friday 9pm/8c (October 6, 2000 – January 12, 2001) , Thursday 9pm/8c (February 1, 2001 – May 17, 2001) | October 6, 2000 | May 17, 2001 | 2000–2001 | #10 | 17.80 |
| 2 | 23 | Thursday 9pm/8c | September 27, 2001 | May 16, 2002 | 2001–2002 | #2 | 23.69 |
| 3 | 23 | Thursday 9pm/8c | September 26, 2002 | May 15, 2003 | 2002–2003 | #1 | 26.20 |
| 4 | 23 | Thursday 9pm/8c | September 25, 2003 | May 20, 2004 | 2003–2004 | #2 | 25.27 |
| 5 | 25 | Thursday 9pm/8c | September 23, 2004 | May 19, 2005 | 2004–2005 | #2 | 26.26 |
| 6 | 24 | Thursday 9pm/8c | September 22, 2005 | May 18, 2006 | 2005–2006 | #3 | 24.86 |