King has also alluded to the idea that Pennywise or maybe one of his spawn is still alive. Tommyknockers has a scene where they drive through Derry and in one of the storm drains they see silver eyes. Which in the books are how Pennywise eyes are predominately described. Then in Dreamcatcher there is a scene where they are in Derry and there is a memorial commemorating the Losers Club that has "Pennywise Lives" spraypainted on it.