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Action & Adventure•Mystery•Drama

The Best Seasons of Secrecy of the Investigation

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

Binge this in Unknown•Peaking at 10.0/10

In the center of the plot is a senior investigator named Masha Shvetsova and her male colleagues. The plot is the most vital, but, like in “Streets of Broken Lanterns,” it is seasoned with a

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#1

Season 12

12 Episodes

First Aired: Feb 2013

10.0/ 10
Average Rating
#2

Season 9

24 Episodes

First Aired: Oct 2011

9.5/ 10
Average Rating
#3

Season 7

12 Episodes

First Aired: Mar 2008

9.0/ 10
Average Rating

Other Seasons

#4

Season 8

12 Episodes

First Aired: Apr 2009

9.0/ 10
Average Rating
#5

Season 1

16 Episodes

First Aired: Sep 2000

8.6/ 10
Average Rating
#6

Season 2

12 Episodes

First Aired: Mar 2003

8.6/ 10
Average Rating
#7

Season 3

12 Episodes

First Aired: Mar 2004

8.4/ 10
Average Rating
#8

Season 4

12 Episodes

First Aired: Mar 2005

8.4/ 10
Average Rating
#9

Season 6

12 Episodes

First Aired: Dec 2006

8.1/ 10
Average Rating
#10

Season 5

12 Episodes

First Aired: Apr 2006

8.1/ 10
Average Rating
#11

Season 16

20 Episodes

First Aired: Dec 2016

8.0/ 10
Average Rating
#12

Season 17

24 Episodes

First Aired: Dec 2017

8.0/ 10
Average Rating
#13

Season 22

16 Episodes

First Aired: Dec 2022

8.0/ 10
Average Rating
#14

Season 18

24 Episodes

First Aired: Dec 2018

7.9/ 10
Average Rating
#15

Season 10

24 Episodes

First Aired: Nov 2011

N/A/ 10
Average Rating
#16

Season 11

12 Episodes

First Aired: May 2012

N/A/ 10
Average Rating
#17

Season 13

20 Episodes

First Aired: Dec 2013

N/A/ 10
Average Rating
#18

Season 14

16 Episodes

First Aired: Dec 2014

N/A/ 10
Average Rating
#19

Season 15

16 Episodes

First Aired: Dec 2015

N/A/ 10
Average Rating
#20

Season 19

24 Episodes

First Aired: Dec 2019

N/A/ 10
Average Rating
#21

Season 20

24 Episodes

First Aired: Dec 2020

N/A/ 10
Average Rating
#22

Season 21

24 Episodes

First Aired: Dec 2021

N/A/ 10
Average Rating
#23

Season 23

16 Episodes

First Aired: Dec 2023

N/A/ 10
Average Rating
#24

Season 24

16 Episodes

First Aired: Dec 2024

N/A/ 10
Average Rating
#25

Season 25

16 Episodes

First Aired: Nov 2025

N/A/ 10
Average Rating