His Dark Materials: Season 1 Finale Promo(s)

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Season 1, Episode 8 "Betrayal"
As the Magisterium closes in, Lyra learns more about Asriel's rebellion, but her assistance to him comes at great personal cost.
The show airs Sunday nights at 8PM on BBC One and Monday nights at 9PM ET on HBO.

And a second trailer:

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source: 1, 2
Your thoughts on the first season, ONTD?