معمای ژیمناستیک

Henry, Jessie, Violet, and Benny are happy to share their home with Katya, the young gymnast, and watch her practice for the big competition. When things start going wrong at the gym it quickly becomes clear that someone is trying to ruin Katya{u2019}s chances of winning{u2014}but who? The Aldens want to help. The trouble is, Katya{u2019}s been acting a little mysterious herself{u2014}almost as if she{u2019}s got something to hide. But what? Can the Boxcar Children solve both mysteries before the big competition? Katya, a young Russian gymnast, stays with the Aldens while she practices for the big competition. But someone doesn't want her to win! The Aldens try to help a visiting Russian gymnast who is surrounded by mysterious people and events and who seems to have a secret.