His Dark Materials Season 1 Finale Promo Teases Casualties

His Dark Materials’ Season 1 finale is upon us and now HBO has released a new promo for the upcoming episode. In just a few days, Lyra’s path has brought her to her father Lord Asriel. Now that Lyra has reunited with Roger, it seems that her quest has come to an end. But some new dangers await the two young protagonists under the Northen Lights.

The synopsis of “Betrayal” reads as follows:

“As the Magisterium closes in, Lyra learns more about Asriel’s rebellion, but her assistance to him comes at great personal cost.”

Jamie Childs directed the episode written by Jack Thorne. You can watch the new His Dark Materials Season 1 finale promo in the player below.

RELATED – Iorek Byrnison Claims the Throne in His Dark Materials Episode 7 Promo

The His Dark Materials cast also includes Dafne Keen (Logan), James McAvoy (Dark Phoenix), as well as Ruth Wilson (Luther) and Lin-Manuel Miranda (Mary Poppins Returns). In a parallel universe where all humans have animal companions called dæmons, the young Lyra, living a sheltered life among the academics at Jordan College, Oxford, discovers a dangerous secret.

Other cast members include Anne-Marie Duff (Suffragette) as Ma Costa, James Cosmo (Game of Thrones) as Farder Coram, Lucien Msamati (Richard II) as John Faa, Mat Fraser (Cast Offs) as Raymond Van Geritt, as well as Geoff Bell (War Horse) as Jack Verhoeven, and Simon Manyonda (King Lear) as Benjamin de Ruyter.

Part of Philip Pullman’s trilogy was previously transported to the big screen in The Golden Compass. The 2007 movie starred Nicole Kidman, Daniel Craig, as well as Dakota Blue Richards, and Eva Green. Chris Weitz’s movie, though, covered just Pullman’s first novel, also called Northern Lights.

The next episode of His Dark Materials will air on December 23 on HBO.