Spoilers if you haven't seen or read 'Prince Caspian'.
So in Prince Caspian some evil guys:
Attempt to resurrect the White Witch.
In the movie, I'm aware this doesn't exactly happen in the books.
The White Witch appears to Edmund and then Peter and tries to convince them to sacrifice some blood to complete the ritual.
But my question is, is this actually Jadis in some sort of Spirit form or is it more like Voldemort's Locket? I know that's not a perfect analogy because the locket actually had a part of Voldemort's soul inside it.
To expand upon this, was this simply a magical illusion appearing as the White Witch or was that some remnant part of Jadis' spirit or soul who was actually talking to the Pevensie boys from beyond the grave?
I understand that's not the clearest question ever but I think I've gotten my point across. I'm also aware that in the books:
The White Witch doesn't herself actually appear in this scene.
So the evidence would be limited but give me everything you've got.