The ideas and plot moves of Wilkie Collins from the novel "Moonstone" were used by Conan Doyle. Gilbert Chesterton. Agatha Christie, a lot of things have become classics for the detective genre. Thus, the Hindu god Vishnu commanded that "Moonstone is protected by three serpents day and night, until the end of the century" and predicted the misfortune of those who dare to seize it. A fascinating continuation of the story - in the very first and best, according to Thomas Eliot, a detective novel of English literature.