Josef Váchal https://en.wikipedia.org/w... , his life partner Anna Vacková and my great-grandfather Josef Koros (backwards sorok, which in Russian means 40) were very good friends. The group that met regularly at my great-grandfather's house not only with Váchal and Vacková but many other, was called "Pátečníci" (in translation: Friday people).

All three officially died within one week, and all three bodies disappeared shortly after the faked deaths. Great-grandmother missed great-grandfather a lot, I still remember her well, but she told me that she knew that the reason why great-grandfather left was very important.

Váchal's Krvavý román (translate: The Bloody Novel) https://cs.wikipedia.org/w... is, in fact, a coded message.
An important theme of the novel is the struggle between the Jesuits and the Freemasons. Typographical "errors" in the text are not errors.