Draco and the Lightning Struck Tower/Zabini/Wine/Necklace

[career advisor]

No: HPFGUIDX 169801

Everone seems fairly certain that Draco sent the poisoned mead to Slughorne and arranged for Katie to find the necklace.
   
  But Draco denies this to Dumbledore and Zabini was specefically mentioned by JKR as sitting in Rosmerta' s bar around the time of the necklace incident.
   
  So why can't the perpertrator by Zabini?
   
  I know a lot of people think that JKR's introduction of Zabini in HBP was sort of a treat for the fans. 
   
  But it would fit JKR pattern of introducing a character in the book who turns out to be a villian.
   
  For instance Q in PS
  P.P in POA (as a rat)
  Barty Couch, Jr in GOF
   
  What do you think?
   
    

       
---------------------------------
Boardwalk for $500? In 2007? Ha! 
Play Monopoly Here and Now (it's updated for today's economy) at Yahoo! Games.

[Non-text portions of this message have been removed]