While production is underway for the first season of BBC’s new drama His Dark Materials, based on the Phillip Pullman book trilogy, an eight-part Season 2 has already been ordered.

His Dark Materials is shaping up to be a huge undertaking for the BBC. The ensemble cast comprises James McAvoy, Dafne Keen and Lin Manuel Miranda, with the series already considered one of the most expensive British shows ever.

Keen, known for her role as X-23 in Logan, stars as Lyra, an orphan from a parallel universe. Miranda’s will portray the adventurer Lee Scoresby, with McAvoy playing Lyra’s father, Lord Asriel.

Rounding out the cast are Clarke Peters (The Wire, Three Billboards Outside Ebbing, Missouri) as Lyra’s master and the person who raises her, Ruth Wilson (The Affair) as Marisa Coulter — Lord Asriel’s former lover — and Ariyon Bakare (Rogue One) as the charming antagonist Lord Boreal.

Dafne Keen’s real-life father, Will Keen from Wolf Hall, is also a featured player in the role of Father MacPhail.

In development since 2016, there is no word on a premiere date for His Dark Materials. The first book in the trilogy, The Golden Compass, , was adapted into a movie in 2007.