New It: Welcome to Derry behind the scenes clip shows Pennywise star Bill Skarsgård filming that spine-chilling cliffhanger in a creepy (but very clever) way

It: Welcome to Derry episode 7 ended in an absolutely horrifying way, and a new behind-the-scenes video has revealed just how Pennywise actor Bill Skarsgård filmed the moment. Warning, spoilers for the episode follow!After the awful tragedy of the Black Spot fire, Pennywise calls Will Hanlon on the phone to taunt him over the death of his friend Rich. The phone call starts out with the voice of Ronnie, however, and slowly turns more sinister until Pennywise and Will are shouting at each ot