I think the probabilities work out roughly as follows:
50% Malfoy’s Imperius debt.
20% nothing anyone here has thought of
10% Something involving the true Patronus(Hermione casting it, etc.)
10% all the other wacky theories proposed combined
10% Harry fails and Hermione goes to Azkaban.
I realize that this looks like a list designed to make me not look like too much of an idiot no matter what the result is, but I am not particularly confident, so I’ll leave my error bars wide.
I think the probabilities work out roughly as follows:
50% Malfoy’s Imperius debt.
20% nothing anyone here has thought of
10% Something involving the true Patronus(Hermione casting it, etc.)
10% all the other wacky theories proposed combined
10% Harry fails and Hermione goes to Azkaban.
I realize that this looks like a list designed to make me not look like too much of an idiot no matter what the result is, but I am not particularly confident, so I’ll leave my error bars wide.