Snape brewing Polyjuice Potion (was: Snape the spy)

[MMMfanfic at hotmail.com]

No: HPFGUIDX 18224

There are a few problems with Snape as polyjuiced Crouch jr:
1. Time Constraint.  Whatever he was sent to do by Dumbledore, it was 
agreed prior to The Dementor's Kiss.  Dumbledore didn't find out 
about Crouch until the Hospital wing scene.
2. Too huge a risk.  Polyjuice only lasts for an hour.  (umm, I need 
a drink, Master...)
3. Crouch used this to impersonate Moody.  JKR is more inventive than 
this.