Young Slayer of Hogwarts

Albus Dumbledore receives an anonymous letter. And with that letter, he receives a flask that has a memory in it. Snape and Dumbledore watches the memory in the Pensieve and finds that the girl in the memory was familiar to them. The weirdest part of it all is that they never met the girl before. They set out to find who this girl is. Later on, they find out that she lives in a haunted mansion inside a forest. Dark magic surrounds the forest and the mansion as Dumbledore and Snape enter the place with the help of some Aurors. There they find out answers to the missing kid of the nearby village, the deaths of the men that tried to find the child, and the answers to the mysterious girl and the magic surrounding the forest.

Disclaimer: I do not own any of the original characters of the Harry Potter series. I own only the characters I made.