

TV series
Secrecy of the Investigation
2000–, Russian, on NTV & TV-6.
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 fair amount of humor - otherwise, how can the audience (and the heroes) endure countless morgues, identifications and other “cute” charms of the investigative routine?
- Seasons
- 25
- Episodes
- 428
- Episode length
- 45 min
- Status
- Still running
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Where to watch Secrecy of the Investigation
Secrecy of the Investigation isn’t listed on any OTT platform in India yet.
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Latest episode
S25 E16: Episode 16
Aired 10 December 2025
Seasons 25

Season 1
2000 · 16 episodes · 9.4/10

Season 2
2003 · 12 episodes · 9.4/10

Season 3
2004 · 12 episodes · 8.9/10

Season 4
2005 · 12 episodes · 9.5/10

Season 5
2006 · 12 episodes · 9.0/10

Season 6
2006 · 12 episodes · 9.0/10

Season 7
2008 · 12 episodes · 9.0/10

Season 8
2009 · 12 episodes · 9.0/10

Season 9
2011 · 24 episodes · 9.5/10

Season 10
2011 · 24 episodes · 8.0/10

Season 11
2012 · 12 episodes · 8.0/10

Season 12
2013 · 12 episodes · 8.0/10

Season 13
2013 · 20 episodes · 8.0/10

Season 14
2014 · 16 episodes · 8.0/10

Season 15
2015 · 16 episodes · 8.0/10

Season 16
2016 · 20 episodes · 8.0/10

Season 17
2017 · 24 episodes · 8.0/10

Season 18
2018 · 24 episodes · 8.0/10

Season 19
2019 · 24 episodes · 8.0/10

Season 20
2020 · 24 episodes · 8.0/10

Season 21
2021 · 24 episodes · 8.0/10

Season 22
2022 · 16 episodes · 8.0/10

Season 23
2023 · 16 episodes · 8.0/10

Season 24
2024 · 16 episodes · 7.9/10

Season 25
2025 · 16 episodes · 8.0/10
Cast & crew
- Anna KovalchukМария Швецова · 428 ep
- Vyacheslav ZakharovВиктор Иванович Ковин · 418 ep
- Aleksandr NovikovФёдор Курочкин · 417 ep
- Andrey SharkovЛеонид Панов · 416 ep
- Igor NikolaevLeonid Korablyov · 326 ep
- Miroslav MalichCast · 282 ep
- Yuliya YakovlevaЗоя · 274 ep
- Igor GrigoryevFilonov · 257 ep
- Oleg AlmazovAnton Staroseltsev · 170 ep
- Sergei BaryshevVinokourov · 160 ep
- Dmitriy PodnozovDmitry Zhirov · 144 ep
- Svetlana SchedrinaOlga Tsvetkova · 142 ep
Details
- First aired
- 1 September 2000
- Network
- NTV , TV-6, Dom Kino, Russia-1, Smotrim
- Original title
- Тайны следствия
- Language
- Russian
- Country
- Russia
- Type
- Scripted
Check ratings elsewhere
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Secrecy of the Investigation: quick answers
Is Secrecy of the Investigation worth watching?
Secrecy of the Investigation doesn’t have enough ratings for a verdict yet.
How many seasons of Secrecy of the Investigation are there?
Secrecy of the Investigation has 25 seasons and 428 episodes, about 45 minutes each.
Is Secrecy of the Investigation finished?
Secrecy of the Investigation is still listed as returning series; no new episode date is announced yet.
Which OTT platform is Secrecy of the Investigation on?
Secrecy of the Investigation isn’t listed on any OTT platform in India yet. (Checked 13 November 2026.)
Secrecy of the Investigation parents guide: is it suitable for kids?
No age rating is listed for Secrecy of the Investigation yet.
What shows are like Secrecy of the Investigation?
If you liked Secrecy of the Investigation, try Nemesis, Motive, Crossing Lines.