Deer Stalking- Dreamnotfound

The hunter and the Huntress ,

The lone wolf and the deer.

Following the abrupt news of their father's death, George and his sister are adopted by their only living relative, their uncle.
Upon settling into their new home between the safe walls of the castle, mysterious events start to arise questions in the both of them.

Who played the piano when no one sat in the chair?
Why did things appear out of seemingly nowhere?
Who were the bandits who targeted them?

But most importantly who was the boy under George's window who came every night?