This is honestly a long shot and probably not true. But, what if the ghost in Blackthorn Hall is either Gideon or Gabriel.
Here’s some evidence:
1. It’s Blackthorn Hall, which used to belong to the Lightwoods. It would make sense that when they died, their ghost would be at the house. Any of the merry thieves wouldn’t.
2. You become a ghost when you have unfinished business. I think we can all agree that Tatiana will die in CoT without reconciling with her brothers, and although I believe that they would move past it throughout their lives, there is a possibility that it becomes a kind of unfinished business when they die.
3. The ghost reacted to the name Blackthorn. Their sister kept the last name Blackthorn so it was obviously have significance to them.
4. The ghost reacted to Matthew’s name. This could be that they both loved Matthew, or it could even be them reacting to the Fairchild last name. The Fairchilds played a really important roll in their lives, and they were like family so they would obviously react.
5. We all think the ghost knows Magnus, and they both do. Not much more needs to be said there.
I don’t have evidence for the silver band. The objects are their children’s belongings, but I think that the merry thieves + their friends are probably going to defeat Belial in some way with using symbolic objects and that’s the curse being broken. It would also spoil some if CoT if this was true so this is probably wrong.
