IT: Welcome to Derry Halloween Episode Recap: The Sacred Pillars and Maturin

HBO decided to celebrate Halloween by giving IT: Welcome to Derry fans something they weren't expecting: an entirely new episode. And instead of sending Pennywise out to terrorize another group of unfortunate children, the series takes us hundreds of years into the past to reveal how the evil haunting Derry was contained in the first place.

The surprise special, “A Story of Derry,” is only about 30 minutes long, but there's plenty packed into that half-hour. Between an ancient creature, a mysterious warrior with some disturbing secrets, and a major appearance from Stephen King's larger mythology, the episode offers some important answers while making Derry's history even more unsettling.

Three Young Girls Enter the Western Wood

The story centers on Necani, played by Kiawentiio, and her companions Kino and Maneese, who venture into the forbidden Western Wood. With their community struggling to find enough food, Necani decides to disobey the warnings of her elders and hunt in territory that everyone knows is dangerous.

And because this is Welcome to Derry, we already know that ignoring warnings about a creepy forest is probably not going to end well. The girls encounter the ancient entity their people know as the Kollu, a terrifying presence that has been preying on humans long before anyone ever heard of Pennywise the Dancing Clown.

The creature is growing stronger as it feeds on people, including English settlers entering the region. Its ability to manipulate fear makes it particularly dangerous, and the girls quickly discover that surviving an encounter with this thing is going to require more than simply running in the opposite direction.

Their unexpected salvation comes from Mitig, a mysterious warrior played by Zahn McClarnon. Armed with a special dagger capable of driving the creature away, he appears to understand the monster far better than anyone else they've encountered. Unfortunately, having a weapon that frightens an ancient evil doesn't automatically make someone trustworthy.

Mitig Has Some Disturbing Secrets

Mitig initially seems like the person who might help the girls understand what they're facing. He possesses knowledge about the creature and the strange fragments connected to its arrival on Earth, including the material used to create his powerful dagger. But as the story unfolds, it becomes clear that Mitig isn't simply an experienced warrior trying to protect his people. He's been sacrificing others to the entity, making his apparent protection of the girls considerably more disturbing.

That revelation changes the entire dynamic of the encounter. The person who seemed capable of saving them has his own horrifying relationship with the monster, and the girls must escape before they become part of his plans. Zahn McClarnon brings an unsettling presence to Mitig, particularly because the character's knowledge and confidence initially make him appear dependable. It's a reminder that the most frightening person in a Stephen King story isn't always the supernatural creature hiding in the darkness. Sometimes it's the person telling you they know how to keep you safe.

Necani's Mother Pays the Ultimate Price

The episode also revisits the tragedy surrounding Necani's mother, Sesqui, whose fate was previously established in the first season. The special fills in more of the circumstances surrounding her confrontation with the evil threatening their community. The creature takes on terrifying forms, including a diseased missionary, adding another disturbing dimension to its ability to prey on human fears. By the time Necani returns, she's too late to save her mother, leaving her to confront the devastating consequences of what has happened.

It's one of the episode's most important emotional moments because the story stops being simply about surviving a monster. Necani has lost someone she loves, and now she's facing an evil that could continue destroying her people for generations.

Rather than allowing that loss to be the end of the story, she looks for another way to fight back. And that decision leads to the special's biggest revelation.

Maturin Finally Makes His Appearance

Here's where things get especially interesting for longtime Stephen King fans. After consuming herbs obtained from Mitig, Necani experiences a vision involving Maturin, the cosmic turtle whose existence is deeply connected to the mythology surrounding It. Yes, we're talking about a giant cosmic turtle, and somehow that's not even close to the strangest thing in Stephen King's universe.

Maturin represents a force opposed to the darkness embodied by It. His appearance provides Necani with the knowledge necessary to contain the creature, introducing a much larger cosmic struggle into a story that initially appeared to be about a monster living in the woods. For readers familiar with King's original novel and his connected mythology, Maturin's live-action debut is a significant moment. The character has long been difficult to incorporate into screen adaptations, but Welcome to Derry finally gives him a place in the story. And importantly, the episode doesn't treat that appearance as an isolated Easter egg. Maturin's intervention directly influences what happens next.

How the 13 Sacred Pillars Were Created

With the knowledge she gains from Maturin, Necani helps establish the barrier that will keep the creature confined to the land that eventually becomes Derry. Thirteen sacred pillars, connected to the fragments of the entity's arrival on Earth, form the boundaries of its supernatural prison.

The revelation gives new meaning to events from Season 1, when one of those pillars was displaced and Pennywise gained an opportunity to move beyond the limits that had contained him. The special explains why restoring that barrier was so important and how much history was behind the protections the characters were fighting to preserve.

But there's something particularly tragic about knowing that the creature remains trapped rather than destroyed. Necani's people manage to protect the world beyond those boundaries, yet the evil itself continues to exist, eventually becoming the nightmare that generations of Derry residents will encounter. It's a victory, but hardly a permanent solution. Anyone familiar with Pennywise's habit of returning every 27 years knows this monster isn't particularly good at staying out of trouble.

Final Thoughts: A Halloween Surprise Worth Watching

“A Story of Derry” succeeds by giving the franchise something more meaningful than another round of jump scares. It expands the mythology, explores the people who first confronted the entity, and adds emotional weight to the ancient protections that play such an important role in the main series. Kiawentiio gives Necani a compelling mix of determination and vulnerability, while Zahn McClarnon makes Mitig an appropriately unsettling presence. The appearance of Maturin is also a major reward for Stephen King fans who have been waiting to see that part of the mythology brought to life.

Perhaps the most interesting decision is leaving Pennywise's familiar clown appearance out of the episode entirely. The horror doesn't need the red balloons or the painted smile because the creature existed long before either became part of its identity.

With IT: Welcome to Derry already renewed for Season 2, this Halloween special provides a fascinating addition to the larger story. The next season will move back to 1935 and explore the Bradley Gang massacre, but “A Story of Derry” reminds us that the town's horrifying history began long before any of those events. And after everything we've learned, one thing is still painfully obvious: nobody should ever trust the woods around Derry.

IT: Welcome to Derry — A Story of Derry is streaming on HBO Max.