

Children from in a summer camp decided to invite a group of famous actors to visit them.
A Mystery Known to All was directed by Nikolay Zaseev-Rudenko.
A Mystery Known to All holds an average rating of 6.0/10 on TMDB, and it lands best with fans of comedy, family and music. Join the discussion below to add your take.
A Mystery Known to All runs for 2h 20min, and was released in 1981.
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