We'll have to wait till Sunday 6/10 to view the final episode. If you're poking around this link - you have at least some interest and belief in the "unexplainable". My "sense" of how it will end ...

The last few minutes will reveal that the last season or so was a dying vision experienced by Tony. He will expire - a victim of his uncles gun shot wound. Christopher is still alive, Bobby is still alive, etc ...