I could use some help from the experts

[Jan]

Our family is having a Magical Murder Mystery for our two day December
get together this year. Christmas at Hogwarts will include Dumbledore
(who may have been found alive or is being impersonated) McGonagall,
Pomfrey, Sybill (who needs a good prophesy), Hagrid (some deadly new
pet?), a new DADA, and 2 students (recovering from something). Someone
is dead, someone here did it - and facts point to everyone. 

Unlike a lot of the HP sites I've looked through, this site and it's
sister site seem to be made up of very intelligent, very well read,
and amazingly knowlegeable people - Really, where else would I go if I
need a prophesy from Sybill that points to everyone at the table? Or
some really funny puns? 

I'll take any suggestion, pointer, idea - and if it comes out well -
I'll send everyone the plan I finally put together - and my thanks.

Quid Agis,
  Tesha

oh - 2 of the participants are family "Knight" - they're getting
"Knight Bus" tee shirts the next day!