The Strength of the Wolf (слэш)

Jackson had thought that moving to London would solve at least some of his many, many problems. He could start over somewhere that was about as far away from Beacon Hills as it was possible to get, and leave his recent past behind him. But Jackson isn’t the only werewolf who tried to leave his trauma in Beacon Hills. When an old acquaintance comes to town, Jackson finds that he can’t escape his past after all. But maybe, just maybe, something good can come from it. (Canon-compliant; concurrent with Season 4, extending into post-4.)