Severus Snape was never one to beleive in the power of wishing. Such silly superstitions were for the weak minded and foolish inclined.

Emmeline Vance had given up on such things altogether. All she'd ever wished for had come crashing down a long time ago.

Harry Potter had many wishes, hidden away from the world. Things he could never voice. Never say. 

But in a world of magic, wishes have power.

And some of them really want to be fullfilled.