The final film of the television series "The Adventures of Sherlock Holmes and Dr. Watson." It is based on the late and little-known stories of Arthur Conan Doyle, united by the theme of the approaching world war and the struggle of the legendary detective with foreign spies.

Vasiliy Livanov
as Sherlock Holmes

Vitali Solomin
as Dr. Watson

Boryslav Brondukov
as Inspector Lestrade

Boris Klyuev
as Mycroft Holmes

Innokentiy Smoktunovskiy
as Lord Bellinger - Prime Minister

Aleksandr Romantsov
as Sir Trelawney Hope

Elena Safonova
as Lady Hilda Trelawney Hope

Larisa Guzeeva
as Madame Henri Fournaye

Igor Efimov
as Ferguson

Viktor Koretskiy
as Hederly - Hydraulic Engineer