Isaiah Mustafa hints that Welcome to Derry will "fill in some gaps" and that It: Chapter Three might be on the way.

There are a few Pennywise clues before Mrs. Kersh transforms into the villain. Beverly spots a number of flies in a circle at the window. And the teacups the two drink out of are oddly reminiscent ...

The It prequel series, Welcome to Derry, promises a fresh dose of terror with a group of kids facing off against Pennywise. However, not all will survive, according to casting director Rich Delia.