Apples and Ravens

Ella and Jacen Emrys are twins with magical powers. When they come to Hogwarts, they find themselves amongst a sea of muggle-borns, more of which are popping up every year. The twins find themselves in a quest for ancient artifacts and begin to see the dead rise again. But what is the price that they will pay? Do the ends really justify the means? Sequel to Apples and Snakes.