HBO and BBC One have begun production on season three of HIS DARK MATERIALS. The eight-episode third season is based on “The Amber Spyglass,” the final novel in Philip Pullman’s award-winning trilogy.

Adapting Philip Pullman‘s award-winning trilogy of the same name, which is considered a modern masterpiece of imaginative fiction, HIS DARK MATERIALS series follows Lyra (Dafne Keen), a seemingly ordinary but brave young woman from another world.

Season three will see “Will” (Amir Wilson), the bearer of The Subtle Knife, and “Lyra” (Dafne Keen), the prophesied child, travel through multiple worlds to find and protect each other.

Returning cast: Dafne Keen as “Lyra,” Amir Wilson as “Will,” Ruth Wilson as “Mrs. Coulter,” Simone Kirby as Mary Malone,” Will Keen as “Father President McPhail,” Jade Anouka as “Ruta Skadi,” Ruta Gedminstas as “Serafina Pekkala” and James McAvoy as “Lord Asriel.”

Newly added cast: Adewale Akinnuoye-Agbaje (“Suicide Squad,” “Lost,” “Oz“) as “Commander Ogunwe”; Jamie Ward (“Tyrant“) as “Father Gomez”; Kobna Holdbrook-Smith (“Zack Snyder’s Justice League,” “Mary Poppins Returns“), Simon Harrison (“No Man’s Land,” “Everest“) and Chipo Chung (“Into the Badlands“) are the rebel angels “Balthamos,” “Baruch” and “Xaphania.” Amber Fitzgerald-Woolfe as “Ama.”

GQ called season two of HIS DARK MATERIALS “a towering success,” while Paste Magazine hailed it as “more epic than ever before.” Mashable praised the show’s “absorbing cast,” while Slashfilm called season two “essential viewing.”

Francesca Orsi, Executive Vice President, HBO Programming, quote: “It has been a joy watching audiences embrace this incredible journey of self-discovery, friendship and purpose with Lyra over the past two seasons. Jane, Dan and everyone on the Bad Wolf team have done such a tremendous job bringing Philip’s beloved world to life, and I cannot wait for the fans to get a front-row seat to all that is in store in this gripping and poignant final chapter.”

Jane Tranter, Bad Wolf Founder and Executive Producer quote: “‘The Amber Spyglass’ is the most gloriously complex of Philip Pullman’s novels to adapt for TV but with our world-class creative team in Cardiff no challenge is too daunting. This season is both an epic adventure and a story about love and truth. Jack, Francesca, and Amelia’s scripts capture the brilliance of Philip’s worlds and we are joined by our much-loved existing cast and some exceptional talent new to the series.”

· Credits: HIS DARK MATERIALS is produced by Bad Wolf in association with New Line Cinema for BBC One and HBO. Executive producing the series are Jane Tranter, Dan McCulloch, Joel Collins, and Julie Gardner for Bad Wolf; Philip Pullman, Jack Thorne, Tom Hooper; Deborah Forte, Toby Emmerich and Carolyn Blackwood for New Line Cinema; and Ben Irving for the BBC.