i don't think it was neville, and i'm guessing that the weasley family was involved somehow? how? i don't know... maybe have ron's curse backfire on him... though then ginny doesn't fit into the picture... not sure...
i personally don't like ron or ginny, so i'm trying to make them both bad guys, though i can't find a scenario where that happens.. damn.
anyway, excellent stuff
Author's response
Thank you. I won't say who or what is the real culprit here, but expect a surprise or two.
GG