MGM+ has renewed its hit science fiction horror series By for a 10-episode fourth season.

Created by John Griffin (Crater) and executive produced by Griffin, showrunner Jeff Pinkner (Lost, Alias, Fringe) and director Jack Bender (Lost, Game of Thrones), the series unravels the mystery of a nightmarish city that traps all who enter. By will return to production in Nova Scotia in 2025 and premiere in 2026.

Harold Perrineau (Lost) leads an ensemble cast that includes Catalina Sandino Moreno (Mary full of grace, the affair), Eion Bailey (Band of brothers), Hannah Cheramy (Under wraps, Van Helsing), Simon Webster (Gets lost), Ricky He (The good doctor), Chloe Van Landschoot (Charity, skin), Corteon Moore (Utopia Waterfalls), Pegah Ghafoori (The perfect wedding), David Alpay (Castle Rock), Elizabeth Saunders (Clarice), Avery Konrad (Honor Society), Scott McCord (Eastern Midwest), Nathan D.Simmons (Diggstown, this hour has 22 minutes)Kaelen Ohm (Hit & Run, Eumenides Waterfalls), Angela Moore (A series of unfortunate events, girl), A.J. Simmons (Reiker)Deborah Grover (night heat), Robert Joy (CSI: NY) and Samantha Brown (Y: The last man).

“By It was a sensation for MGM+, captured the attention of millions of viewers and helped us shine a bright light on our MGM+ brand,” said Michael Wright, head of MGM+. “Our talented show creators and cast have brilliantly and meticulously created this beautiful show, and we look forward to providing the answers to the By the audience is so excited for season 4!”

By is a bull’s eye for MGM+. The sci-fi drama is the most-watched series in the premium network’s history and has a Rotten Tomatoes score of 96 percent.

“We appreciate the support from our fans and our partners at MGM+ and are so excited to share the next chapter of our story with our BYily. By the end of season 3, our characters will begin to understand Why they’re trapped in FROM Town… but will understanding help them escape? And if so, How?” Pinkner said.

Perrineau plays Boyd Stevens, the sheriff whose draconian rules hold the fragile town together even as he searches for a way to escape this seemingly inescapable nightmare.

“With the culmination of season three, we have in many ways reached the end of the beginning. In season four, a new journey begins. The question is whether it will lead our characters home or deeper into this brutal nightmare,” said Griffin. “We are so grateful to our partners at MGM+ for continuing this story and are excited to share the news with our amazing VANily.”

Bender added: “Congratulations and thanks to Michael Wright and MGM+ for the incredible support. And to our brilliant family of actors and our gifted team in Nova Scotia. We look forward to telling more of the story.”

By is a production of Amazon MGM Studios. Jeff Pinkner, John Griffin and Jack Bender serve as executive producers alongside Perrineau, Josh Appelbaum, André Nemec and Scott Rosenberg of Midnight Radio, Anthony and Joe Russo and Mike Larocca of AGBO, and Lindsay Dunn. Midnight Radio’s Adrienne Erickson serves as co-executive producer. The series is distributed internationally by Paramount Global Content Distribution.