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Key Witness

8.519691h 10mMovieDramaMystery

Vasily Kapluntsev, a burgher, died suddenly. Experts found poison in his body, and now his young wife Maria Kapluntseva is accused of murder. The main witness at the trial is the Kapluntsevs' neighbor, Vasily's friend and Maria's lover.

DirectorAida Manasarova
WriterAleksandr Vitenzon
ProducerG. Abramov

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Cast · Directed by Aida Manasarova

YSYelena Sanayeva
Yelena Sanayeva
Mariya Kapluntseva
ABAleksandr Belyavskiy
Aleksandr Belyavskiy
Matvey Novozhilov
LLLarisa Luzhina
Larisa Luzhina
Varvara
LDLarisa Danilina
Larisa Danilina
Sofiya
MKMikhail Kislov
Mikhail Kislov
Vasya Kapluntsov
VSVsevolod Sanayev
Vsevolod Sanayev
Dyudya
ADAleksandra Denisova
Aleksandra Denisova
zhena Dyudi
ALAleksandr Lebedev
Aleksandr Lebedev
Alyoshka
PVPavel Vinnik
Pavel Vinnik
Lebyodkin
BYBoris Yurchenko
Boris Yurchenko
Gerasim Kopylov
VAVera Altayskaya
Vera Altayskaya
Malanyina
BBBoris Bityukov
Boris Bityukov

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Key Witness — streaming FAQ

Which OTT platform streams Key Witness?

Key Witness isn't streaming anywhere in United Kingdom yet.

Is Key Witness on Netflix?

No, Key Witness is not on Netflix in United Kingdom as of September 2026.

Is Key Witness on Amazon Prime Video?

No, Key Witness isn't on Amazon Prime Video in United Kingdom right now.

Where can I watch Key Witness for free?

Key Witness isn't streaming in United Kingdom yet, so there's no way to watch it free at the moment.

What is the OTT release date for Key Witness?

Key Witness hasn't started streaming in United Kingdom yet. Based on the typical 6–8 week theatrical-to-streaming window, we estimate it will arrive around November 10, 1969. This is a prediction, not a confirmed date.