Is Welcome to Derry a Prequel to IT? Timeline Explained
Learn how IT: Welcome to Derry fits before the 2017 and 2019 IT films, what comes from Stephen King’s novel and how the 27-year cycles work.
Is Welcome to Derry a Prequel to IT? Timeline Explained
Yes. IT: Welcome to Derry is a prequel series that takes place before the events portrayed in Andy Muschietti's IT and IT Chapter Two films. Season 1 is set in 1962 and explores an earlier cycle of Pennywise's presence in Derry. The difference between a prequel, a remake and an adaptation of Stephen King's book is important: the show expands the same fictional universe rather than simply retelling the Losers' Club's story.
Where does 1962 fit in the IT timeline?
The two modern films chiefly follow the Losers' Club as children in the late 1980s and as adults decades later. The HBO series turns back to 1962, showing another generation of townspeople facing disappearances and a terrifying entity. Some familiar family names appear, but the children at the center of the prequel are not simply the movie characters transported back in time.
The setting matters because the town itself carries a history. The Air Force base and Cold War anxieties are prominent, and the Hanlon family encounters racial hostility as well as supernatural danger. Those details give the 1962 cycle a social setting that cannot be copied directly from the films' later period.
How do the 27-year cycles work?
Pennywise is associated with recurring periods of violence and hibernation in Derry, commonly discussed as roughly 27-year cycles. That pattern helps explain why the show's creative team proposed exploring different eras rather than following a single group of children through one uninterrupted time span.
Season 1 is centered on 1962; Season 2, renewed in August 2026, is planned for 1935, around 27 years earlier. The 1935 focus is tied to the Bradley Gang incident, a disturbing episode in Derry's older history. This movement backward is a storytelling choice, not a statement that time literally passes backward for ordinary townspeople.
Is Welcome to Derry based on a separate Stephen King book?
No standalone Stephen King novel titled Welcome to Derry serves as the show's source. The series expands the world and historical incidents described in King's IT. Those accounts include town events discussed outside the main childhood adventure, which makes them useful foundations for a prequel.
That also means the show should not be presented as a word-for-word adaptation of a separate 1962 book. It adds characters, scenes and production-specific links to the Muschietti films. The difference matters when comparing a television character's fate with a name or incident mentioned briefly in the novel.
Book chronology versus film and TV chronology
The novel's main timeline and the modern film adaptation's timeline are not identical. Adaptations shift the dates of the Losers' Club's experiences, and the HBO series follows the continuity established by the recent movies. Thus a reader can recognize the same broad cycle and mythology while noticing that specific years or personal connections have changed.
A useful rule is to identify the version being discussed. If a question is about a 1962 scene, use the television series. If it is about a detail of King's book, say so. Avoid treating a discrepancy between those versions as proof that one scene has been secretly erased from the other's continuity.
Should you watch the series before the movies?
For release order, watch IT (2017), then IT Chapter Two (2019), then IT: Welcome to Derry (2025). That approach lets the prequel's references to future characters work as intended. A chronological viewing order would put the television season first, then the movies, but some finale revelations have greater impact when viewers already know the Losers' Club.
Neither sequence is compulsory. New viewers can understand the central 1962 storyline without prior viewing, while longtime fans will recognize more references. The separate Episode 8 ending guide contains major spoilers and is best read after finishing the season.
Frequently asked questions
Is Welcome to Derry IT Chapter 3?
No. It is a prequel television series, not a third film in the same theatrical series.
Is Season 2 set after Season 1?
It is planned to take place earlier, in 1935, rather than moving the story forward from 1962.
Does the show follow Pennywise?
Yes, but the story also focuses on the people of Derry and the social circumstances that shape their response to the threat.
Explore related guides
Each of these pages answers a different question about the series:
IT: Welcome to Derry series guide