My Review of Harry Potter and the Half Blood Prince

[Carol]

Eggplant wrote:
> <snip> And even in the book all Harry knows is that Snape is to finish Draco's task if he fails; he figures that task must be something bad but he isn't sure exactly what it is. 

Carol responds:

In the book, Harry doesn't know that Snape is supposed to finish the task if Draco fails because Snape doesn't reveal that to Draco. All he says is that he made an Unbreakable Vow promising Draco's mother that he would protect him.

Carol, who thinks that Harry would have been a lot more worried and upset (and so would Draco) if Snape had revealed that key provision