The series “Girl Detective Agatha Mystery.”

Endowed with amazing instincts and a phenomenal memory, Agatha Mystery dreams of becoming a writer. But that’s in the future, but for now she’s just an excellent detective! Together with her hapless cousin Larry, a detective school student, she travels the world to solve the most perplexing mysteries. And they are helped by a devoted butler, a mischievous Siberian cat and many eccentric relatives.

Murder in London In the midst of preparations for the traditional Christmas dinner, Darren, Agatha and Larry's cousin, appears on the threshold of Mystery House. But he didn’t come for the holiday. Darren asks the guys for help: he needs to investigate a mystery of the past - an extremely complex case that no one has been able to solve. Thus begins a new adventure for Agatha and Larry: they will look at Highgate Cemetery, go down to the underground river and even end up in Buckingham Palace! Every hour the hunt for clues becomes more and more exciting...