Man in the Smoke
This is not a theory just an observation that i picked up on when i was watching the last episode.
When kate jumps over and into the pit in the temple where clair is being held and hangs on to the rope ladder to get out of the way of smokie, take a look right at the end of the smoke trail as it passes above.
There is a person in the smoke!! I have watched it back on super slow motion and its not something that looks like a person its a definate solid form of a human.
Its something we havent seen before with smokie and im wondering if this could be important to what the entity actually is.
It seems to have been put in purposely because it is so obvious when you play it back.