I have to wonder if...somehow...Shinzon is involved.
I know, I know, he's supposed to be dead. But the knife Vadic has looks very similar to one Shinzon had in Nemesis, and Shinzon is the one person who would really, really want to have access either Picard's body or his son's DNA (as he needs it in order to stablize himself).
Maybe the skull-head guy is actually Shinzon?
Of course, this doesn't answer the question of how he managed to come back to life after being impaled/his ship blowing up. And it doesn't explain what the hell is going on with Jack's visions.
I know, I know, he's supposed to be dead. But the knife Vadic has looks very similar to one Shinzon had in Nemesis, and Shinzon is the one person who would really, really want to have access either Picard's body or his son's DNA (as he needs it in order to stablize himself).
Maybe the skull-head guy is actually Shinzon?
Of course, this doesn't answer the question of how he managed to come back to life after being impaled/his ship blowing up. And it doesn't explain what the hell is going on with Jack's visions.