Halstead: The Fortress (гет)

A fast paced adventure, where a betrayed Harry and Hermione stumble across an old fortress. Who built it? What secrets will it hold? Will they find the answers they need to ending this war? Can they use the castle as a sanctuary? Will Harry finally become the Dark Lord's equal? What's up with the ghost? Follows canon up to Ron's leaving; AU from there. Powerful Harry.