Darkness filled his heart, no breath of life could take away his pain. His sole thought was the downfall of Voldemort, but at what cost? [Implied, not decided, slash]

An unexpected stranger comes to Hogwarts. But what is she after and where does she come from? I wanted to have the pairings be a surprise....but oh well...OOC/Harry, Draco/Harry, Ron/Hermione