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: 3/31/2025Network: CBSStatus: Ended
Season 1
star
8.02
122 votes

#1 - Season 1

First Aired 10/7/2000

Season 4
star
7.96
70 votes

#2 - Season 4

First Aired 9/25/2003

Season 2
star
7.91
91 votes

#3 - Season 2

First Aired 9/28/2001

Season 5
star
7.88
59 votes

#4 - Season 5

First Aired 9/24/2004

Season 3
star
7.87
77 votes

#5 - Season 3

First Aired 9/26/2002

Season 6
star
7.84
69 votes

#6 - Season 6

First Aired 9/23/2005

Season 9
star
7.72
57 votes

#7 - Season 9

First Aired 10/10/2008

Season 7
star
7.70
70 votes

#8 - Season 7

First Aired 9/22/2006

Season 13
star
7.69
45 votes

#9 - 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 11
star
7.64
50 votes

#10 - 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 12
star
7.59
46 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
7.55
67 votes

#12 - Season 8

First Aired 9/28/2007

Season 14
star
7.44
43 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 10
star
7.34
58 votes

#14 - 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.

Season 15
star
7.19
53 votes

#15 - 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.