I'm a little confused about secrets and mysteries. There is information that is withheld from each of us about each others' characters, which is clearly stuff that our characters do not know about each other. Are they also meant to be secrets from the players themselves?
For example, upon arriving at the estate, my character would not know what type of supernatural being the other residents are, or any powers/abilities they have (with the exception of information given out to certain people in the mystery sheets). I don't know these things about the other characters either, but it seems like they'll come up pretty quickly in people's introductions or interactions with other characters etc.
Supposing I have a character Billy who's a werewolf, at this point in time, no characters know that. Is it important that the other players don't know that either, or can I include that in my posts? If Billy reveals his secret to one friend the other characters won't know, but is it also important the players of those characters don't know?
And what is the situation with joint posts/side rping one on one? Allowed, encouraged, public to read, forbidden?