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Given the novel’s subtle horror elements (the Other, the kidnapping, the psychological manipulation), many VK groups focus on the thriller aspect. These communities debate the ethics of the villain, Valentine Ketterley (called "The Other"), labeling him a манипулятор (manipulator).

If you are not a Russian speaker, searching for Piranesi VK can be intimidating. Here is the tactical approach:

You cannot join Piranesi Vk by request. You must be invited by a current member, and even then, the invitation is not a link but a riddle. The current entry puzzle (as of this writing) is hidden in the group’s sole public post — a photograph of a statue of a faun, its left hand missing, in an unidentified museum.

The caption: “He is pointing to the Vestibule of Unfinished Steps. Find the step that ends in 1991. Post nothing. We will see you.”