When Warner Brothers and New Line decided to adapt Stephen King’s It as two movies, they were taking a bit of a risk that depended on the first movie succeeding at a certain level. Of course, the first movie then went on to make $700 million worldwide and the sequel ended up becoming one of the safest bets on their release schedule. They were also able to pull in a star-studded cast to play the grown-up versions of The Losers’ Club including Jessica Chastain, James McAvoy, Bill Hader and… Isaiah Mustafa. The first teaser trailer has arrived online and it focuses mainly on Jessica Chastain, but it also hints at a backstory for Pennywise that may or may not betray his cosmic origins from the book. It: Chapter Two hits theatres on Sept. 6th; check out the trailer below and let us know what you think.