The BEST seasons of CSI: Crime Scene Investigation

Every season of CSI: Crime Scene Investigation ever, ranked from best to worst by thousands of votes from fans of the show. The best seasons of CSI: Crime Scene Investigation!

CSI is a crime drama in which the characters use cutting-edge forensic tools to examine the evidence to solve the case. Rather than asking 'whodunnit' (investigating witnesses/suspects), CSI explores the 'howdunnit'.

Last Updated: 6/29/2025Network: CBSStatus: Ended
Season 1
star
7.92
127 votes

#1 - Season 1

First Aired 10/7/2000

Season 2
star
7.77
93 votes

#2 - Season 2

First Aired 9/28/2001

Season 3
star
7.77
81 votes

#3 - Season 3

First Aired 9/26/2002

Season 4
star
7.76
78 votes

#4 - Season 4

First Aired 9/25/2003

Season 5
star
7.75
56 votes

#5 - Season 5

First Aired 9/24/2004

Season 6
star
7.53
74 votes

#6 - Season 6

First Aired 9/23/2005

Season 13
star
7.51
49 votes

#7 - Season 13

First Aired 9/27/2012

In the 13th season of this venerable crime drama, the CSI team of the Las Vegas Police continues to crack difficult and often bizarre criminal cases.

Season 9
star
7.47
59 votes

#8 - Season 9

First Aired 10/10/2008

Season 11
star
7.46
54 votes

#9 - Season 11

First Aired 9/24/2010

Despite injuries in the ranks, the CSI unit tackles a new slate of cases ranging from an urban shark attack to a deadly fugitive with a chilling agenda.

Season 7
star
7.45
78 votes

#10 - Season 7

First Aired 9/22/2006

Season 12
star
7.35
51 votes

#11 - Season 12

First Aired 9/22/2011

With new supervisor D.B. Russell at the helm, the CSI team continues to use its advanced forensic methods to crack the most baffling cases.

Season 8
star
7.33
73 votes

#12 - Season 8

First Aired 9/28/2007

Season 14
star
7.22
46 votes

#13 - Season 14

First Aired 9/26/2013

Ted Danson and Elisabeth Shue lead an ensemble cast of criminals and crime-solvers in the 14th season of this police drama set in Las Vegas.

Season 15
star
7.19
53 votes

#14 - Season 15

First Aired 9/29/2014

In the long-running procedural's 15th season, the team faces a slew of challenges, including quarantines, car bombs and a jailhouse murder.

Season 10
star
7.14
59 votes

#15 - Season 10

First Aired 9/25/2009

The CSI team unravels a string of complex murders while racing to identify a serial killer whose diabolical medical skills confound the experts.