The Unravelled Seam

In the summer before his Sixth Year, Professor Dumbledore invites Harry to Hogwarts to undertake advanced study with visiting academics from all over the world. He meets Mathias Hoovian, a Durmstrang Professor who studies demonology, who offers Harry an apprenticeship to learn about the Seam-the barrier between life and death, and the place where a horcrux draws its strength...