Mysteries of the Deep

5:00 PM to 6:00 PM

Friday 25 April

Secrets of Russia's Sub

Season 2 Episode 7 of 24

Jeremy investigates an accident involving a nuclear submarine on a secret mission. Plus, scientists investigate ancient human remains in a lake in Finland

Mysteries of the Deep airs on Discovery History +1 at 5:00 PM, Friday 25 April. (Subtitles.)

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Documentary