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CSI: Crime Scene Investigation premiered on October 6, 2000. Since then, fifteen seasons have been broadcast.

The first season consisted of 23 episodes, including a two-part pilot episode written by series creator Anthony E. Zuiker. Seasons two, three, and four also had 23 episodes each, whilst season five had 25 episodes, including a two-part season finale directed by Quentin Tarantino. During seasons six and seven, the episode count was 24, whilst season eight had 17 episodes due to the WGA strike. Season nine had 24 episodes, whilst season ten returned to the series standard of 23 episodes. Seasons eleven, twelve, thirteen, and fourteen set a new standard of 22 episodes per season, whilst the fifteenth season received a reduced order of 18 episodes. The two-hour series finale was aired on September 27, 2015.

The first nine seasons have been released on DVD in Region 1 and Region 2 territories. Seasons 1, 8 (only in France, The Netherlands, Belgium and Germany), 9 (not in Belgium and Germany) and 10 (only in Germany) have been released on Blu-ray Disc. Template:Aired episodes Template:TOC right

Episodes

Season 1 (2000–01)

Template:Main article William Petersen, Marg Helgenberger, Gary Dourdan, George Eads, and Paul Guilfoyle star. Jorja Fox joins the main cast in the second episode. Eric Szmanda, Robert David Hall, and David Berman recur. CSI: Crime Scene Investigation (season 1)

Season 2 (2001–02)

Template:Main article William Petersen, Marg Helgenberger, Gary Dourdan, George Eads, Jorja Fox, and Paul Guilfoyle star. Eric Szmanda, Robert David Hall, and David Berman recur. Khandi Alexander, Rory Cochrane, Adam Rodriguez, David Caruso, and Emily Procter guest star in "Cross Jurisdictions," the pilot episode of CSI: Miami. CSI: Crime Scene Investigation (season 2)

Season 3 (2002–03)

Template:Main article William Petersen, Marg Helgenberger, Gary Dourdan, George Eads, Jorja Fox, and Paul Guilfoyle star. Robert David Hall, and Eric Szmanda join the main cast. David Berman, and Wallace Langham recur. CSI: Crime Scene Investigation (season 3)

Season 4 (2003–04)

Template:Main article William Petersen, Marg Helgenberger, Gary Dourdan, George Eads, Jorja Fox, Eric Szmanda, Robert David Hall, and Paul Guilfoyle star. David Berman, and Wallace Langham recur. CSI: Crime Scene Investigation (season 4)

Season 5 (2004–05)

Template:Main article William Petersen, Marg Helgenberger, Gary Dourdan, George Eads, Jorja Fox, Eric Szmanda, Robert David Hall, and Paul Guilfoyle star. Louise Lombard, David Berman, Jon Wellner, and Wallace Langham recur. CSI: Crime Scene Investigation (season 5)

Season 6 (2005–06)

Template:Main article William Petersen, Marg Helgenberger, Gary Dourdan, George Eads, Jorja Fox, Eric Szmanda, Robert David Hall, and Paul Guilfoyle star. Louise Lombard, David Berman, Liz Vassey, Jon Wellner, and Wallace Langham recur. CSI: Crime Scene Investigation (season 6)

Season 7 (2006–07)

Template:Main article William Petersen, Marg Helgenberger, Gary Dourdan, George Eads, Jorja Fox, Eric Szmanda, Robert David Hall, and Paul Guilfoyle star. Louise Lombard joins the main cast, and departs at the seasons conclusion. David Berman, Liz Vassey, Jon Wellner, and Wallace Langham recur. CSI: Crime Scene Investigation (season 7)

Season 8 (2007–08)

Template:Main article William Petersen, Marg Helgenberger, Gary Dourdan, George Eads, Eric Szmanda, Robert David Hall, and Paul Guilfoyle star. Wallace Langham joins the main cast. David Berman, Jon Wellner, and Liz Vassey recur. Jorja Fox departs the main cast after seven episodes, whilst Louise Lombard guest stars in episode one, departing subsequently.

Season 9 (2008–09)

Template:Main article Marg Helgenberger, George Eads, Eric Szmanda, Robert David Hall, Wallace Langham, and Paul Guilfoyle star. Gary Dourdan and William Petersen depart the cast in episodes one, and ten, respectively. Lauren Lee Smith joins the main cast in episode three, departing at the seasons conclusion. Laurence Fishburne joins the cast in episode 9. Jorja Fox, Liz Vassey, Jon Wellner, and David Berman recur. In Episode 16, American singer-songwriter Taylor Swift appeared in a guest role as Haley Jones. CSI: Crime Scene Investigation (season 9)

Season 10 (2009–10)

Template:Main article Laurence Fishburne, Marg Helgenberger, George Eads, Eric Szmanda, Robert David Hall, Wallace Langham, and Paul Guilfoyle star. David Berman, and Liz Vassey join the main cast, with Vassey departing at the end of the season. Jorja Fox, and Jon Wellner recur.

Season 11 (2010–11)

Template:Main article Laurence Fishburne, Marg Helgenberger, George Eads, Eric Szmanda, Robert David Hall, Wallace Langham, David Berman, and Paul Guilfoyle star. Jorja Fox rejoins the main cast. Liz Vassey, Elisabeth Harnois, William Petersen, and Louise Lombard make single-episode guest appearances. Jon Wellner recurs, Fishburne departs at the seasons end. CSI: Crime Scene Investigation (season 11)

Season 12 (2011–12)

Template:Main article George Eads, Jorja Fox, Eric Szmanda, Robert David Hall, Wallace Langham, David Berman, and Paul Guilfoyle star. Elisabeth Harnois and Ted Danson join the main cast, Marg Helgenberger departs as a series regular in episode twelve, and is replaced by Elisabeth Shue in episode fourteen. Jon Wellner recurs. CSI: Crime Scene Investigation (season 12)

Season 13 (2012–13)

Template:Main article Ted Danson, Elisabeth Shue, George Eads, Jorja Fox, Eric Szmanda, Robert David Hall, Wallace Langham, David Berman, Elisabeth Harnois, and Paul Guilfoyle star. Jon Wellner joins the regular cast. William Petersen provides voice-over in "Dead Air". CSI: Crime Scene Investigation (season 13)

Season 14 (2013–14)

Template:Main article Ted Danson, Elisabeth Shue, George Eads, Jorja Fox, Eric Szmanda, Robert David Hall, Wallace Langham, David Berman, Elisabeth Harnois, Jon Wellner, and Paul Guilfoyle star. Guilfoyle departs the main cast at the end of the season. Marg Helgenberger, and CSI: Cyber's Patricia Arquette both make single-episode guest appearances. CSI: Crime Scene Investigation (season 14)

Season 15 (2014–15)

Template:Main article Ted Danson, Elisabeth Shue, George Eads, Jorja Fox, Eric Szmanda, Robert David Hall, Wallace Langham, David Berman, Elisabeth Harnois, and Jon Wellner star. Eads and Shue depart the main cast at the end of the season. CSI: Cyber's Patricia Arquette guest stars in "The Twin Paradox". CSI: Crime Scene Investigation (season 15)

Finale (2015)

No. overall	No. in season	Title	Directed by	Written by	Original air date	U.S. viewers (millions)

Webisodes (2012)

No.	Title	Original air date

Home video releases

DVD

Season	Episodes	DVD release dates
		Region 1	Region 2	Region 4	Discs
1	23	Template:Start date	Template:Start date	Template:Start date	6
2	23	Template:Start date	Template:Start date	Template:Start date	6
3	23	Template:Start date	Template:Start date	Template:Start date	6
4	23	Template:Start date	Template:Start date	Template:Start date	6
5	25	Template:Start date	Template:Start date	Template:Start date	7
6	24	Template:Start date	Template:Start date	Template:Start date	7
7	24	Template:Start date	Template:Start date	Template:Start date	7
8	17	Template:Start date	Template:Start date	Template:Start date	5
9	24	Template:Start date	Template:Start date	Template:Start date	6
10	23	Template:Start date	Template:Start date	Template:Start date	7
11	22	Template:Start date	Template:Start date	Template:Start date	6
12	22	Template:Start date	Template:Start date	Template:Start date	6
13	22	Template:Start date	Template:Start date	Template:Start date	6
14	22	Template:Start date	Template:Start date	Template:Start date	6
15	18	Template:Start date	Template:Start date	Template:Start date	5
Finale	2	Template:Start date	Template:Start date	Template:Start date	1
Total	337	Template:Start date	Template:N/a	Template:N/a	93

Blu-ray

Season 1 was released 12 May 2009 on Blu-ray and was labeled as a special widescreen edition.

See also

• CSI (franchise)
• List of CSI: Miami episodes
• List of CSI: NY episodes
• List of CSI: Cyber episodes