The WORST seasons of CSI: Crime Scene Investigation

Every season of CSI: Crime Scene Investigation ever, ranked from worst to best by thousands of votes from fans of the show. The worst 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: 12/4/2024Network: CBSStatus: Ended

7.19

53 votes

#1 - Season 15

First Aired 9/29/2014

7.29

56 votes

#2 - Season 10

First Aired 9/25/2009

7.44

43 votes

#3 - Season 14

First Aired 9/26/2013

7.64

50 votes

#4 - Season 11

First Aired 9/24/2010

7.64

45 votes

#5 - Season 12

First Aired 9/22/2011

7.70

60 votes

#6 - Season 8

First Aired 9/28/2007

7.73

52 votes

#7 - Season 9

First Aired 10/10/2008

7.75

44 votes

#8 - Season 13

First Aired 9/27/2012

7.85

61 votes

#9 - Season 7

First Aired 9/22/2006

7.89

56 votes

#10 - Season 5

First Aired 9/24/2004

7.90

60 votes

#11 - Season 6

First Aired 9/23/2005

8.01

67 votes

#12 - Season 3

First Aired 9/26/2002

8.04

76 votes

#13 - Season 2

First Aired 9/28/2001

8.08

63 votes

#14 - Season 4

First Aired 9/25/2003

8.16

107 votes