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Just in time for Halloween, HBO is expanding the universe of “It.”

A new prequel series, “It: Welcome to Derry,” premieres tonight, Oct. 22, on HBO and the HBO Max streaming service.

“It: Welcome to Derry” comes from three of the people behind the 2017 “It” film and its 2019 sequel “It: Chapter Two” — director Andy Muschietti (who directs the first four episodes of the new series), producer Barbara Muschietti, and co-producer Jason Fuchs. 'It: Welcome to Derry': what to know

When: Oct. 26, 9 p.m. ET (weekly on Sundays through Dec. 14)

Channel: HBO

Streaming: HBO Max (try it free)

In the new series, a couple moves to Derry, Ma

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