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Agatha Christie is known around the world as the queen of mystery. About a billion copies of her works have been sold in English, and another billion have been translated into 100 foreign languages. She is the most popular author of all time. In terms of the number of reprints, her books are second only to the Bible and the works of Shakespeare.

Young Tommy and Tuppence have a lot of energy, but no money. To improve their financial situation, the boys and girls decide to found their own society, the Young Adventurers. To do this, they place an advert in the newspaper offering their services. And soon they get their first order: they need to find an American woman named Jane Finn. After the ship Lusitania sank in 1915 as a result of a torpedo hit, the girl disappeared. Along with a secret document. If that international agreement is made public now, the world will face the threat of a new war...

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