About the book: year / Invises: not quite imaginary, not always friends. They come without being called, and they leave without saying goodbye. Invisible playmates that children sometimes have. However, unlike harmless fantasies, these creatures pose a real threat. They love to have fun, but their “pranks” frighten those whom they have chosen as the target of their friendship. It is difficult, almost impossible, to resist them, but a weapon against them has finally been found. Now all that remains is to apply it correctly, and this turns out to be not at all easy..