Po secretu vsemu svetu (In Secret to the Whole World) is a 1976 Soviet two-part television film produced by Belarusfilm. It is adapted from Viktor Dragunsky's popular children's book The Adventures of Dennis, a collection of short stories told from the perspective of a young boy.

Plot
The movie is about a boy named Dennis and his adventures with friends and family. It is divided into two episodes, each in turn covering several stories from the book.

Cast

 Vladimir Stankevich as Dennis Korablev
 Аlеksei Sazonov as Mishka Slonik
 Georgy Belov as Ljovka Burin
 Alexander Lenkov as   Viktor Korablev, Dennis's dad 
 Valentina Telichkina as Asya Korableva,  Dennis's mother
 Alexandra Klimova as Raisa Ivanovna, teacher of literature
 Regina Korokhova as  Marya Petrovna
 Arkady Trusov as uncle Pasha, the janitor
 Alexander Sherstobaev as  Vanya Dykhov
 Alexandra Klimova as  Raisa Ivanovna, teacher of literature
 Fyodor Nikitin as Sergey Petrovich Kolokolov
 Liya Akhedzhakova as Elizaveta Nikolayevna, geography teacher  
 Anatoliy Stolbov as Sergey Stepanovich
 Rostislav Shmyrev as   director of the school 
 Boris Gitin as  Uncle Sasha, a friend of Dennis's dad 
 Anatoly Kuznetsov as  the hitcher with raspberries

Film Crew
 Screenplay by Denis Dragunsky
 Directors: Vitali Kanevsky, Igor Dobrolyubov, Dmitri Mikhleyev, Yuri Oksanchenko, Vladislav Popov

Filming
It was filmed in Minsk, Belarus for 7 months. The school hallway scenes were filmed at school number 115 and the episode when Mishka tells Dennis what he loves and when Ljovka gives Dennis a sleeve was filmed at school 122 in Minsk. The classroom scenes were filmed in the studio.The train scenes were filmed on an inoperative railway line in the Smolevichi region. The train consisted of a locomotive and three carriages. The tower that Dennis was afraid to jump from was filmed in Smolevchi. Vladimir's regular dark blond hair was painted with hydrogen peroxide which caused it to become a lighter shade of blond in the film. During the scenes where Dennis cries, Vladimir said that "glycerin was instilled on the set. The eyes immediately began to pinch, and tears appeared. True, once they were real. The director took the football tickets away from me, and I cried with resentment. The stage was filmed and the tickets were given to me." Georgy fondly recalls that "The assistants came to school and took me out of school, it was such happiness!". Vladimir Stankevich said that Georgy,"stuttered for real, and they wanted him to take a stunt double for voice acting, but when he tried to voice himself, he stuttered exactly in the same places as during the filming."

Music 
 "In Secret to the Whole World"  Big Children's Choir. Solo by Dima Viktorov
 "When My Friends Are With Me" Big Children's Choir. Solo by Dima Golov
 "At the Far Station I'll Go" —  Gennady Belov

Lyrics by Mikhail Tanich, composed by Vladimir Shainsky.

References

Sources
 Денискины рассказы (in Russian)
 

1976 films
Soviet television films
Belarusfilm films
Soviet-era Belarusian films
Films based on children's books
Films directed by Vitali Kanevsky
1976 directorial debut films
1970s Russian-language films
Studio Ekran films

Soviet children's films
1976 television films