“It: Welcome To Derry” Episode 4 Explained – What Is the Galloo and How Pennywise Came to Derry
It: Welcome to Derry continues to deepen the chilling mythology behind one of horror’s most iconic villains. Episode 4, titled “The Great Swirling Apparatus of Our Planet’s Function”, released on November 16, 2025, offers the biggest revelations yet. For the first time in the series, viewers learn about the ancient evil known as the Galloo…

