The Last Secret

A magnificent English detective story set against the backdrop of a mysterious and sinister boarding school. The story of twin sisters who must unravel the mysteries and secrets of their educational institution.
Father gifted us Mom's music box for Christmas! We... are happy, and the first thing we decided to do was to examine it more closely… And we found a hidden compartment inside, and in it, encrypted letters from Mom! Now Scarlett and I can’t wait to return to Rookwood School, because there we will meet our friend Ariadne, who knows how to decipher such codes. And then we will finally learn about our mother's last secret.
But terrible news awaits us in Rookwood. The son of Mr. Bartholomew, the old cruel headmaster, has surfaced! And he claims that he, as the rightful heir of his father, has the right to close Rookwood School. We are horrified, as this school has become our home, a place where we are loved and expected. And this Henry Bartholomew is behaving extremely suspiciously! Now we face a very difficult task: to prove that he cannot run Rookwood! And unexpectedly, the notes from Mom's secret stash will come in handy…