What should I write in "The case as everyone knows it" on the Mystery board?
From version 1.9.22, this field on the Mystery board (in the Codex, under the sealed solution) holds the facts nobody hides: the date, where and when the victim was last seen and found, and the night as the characters tell it. For example: "Saturday 12 October, the night of the book fair. Edmund left the shop at 8; he was found at 7 the next morning in the reading room." Every chapter and the outline keep these facts exactly, so the book never changes its own dates or timeline. It is not a secret: put the real solution in the sealed solution above it.