While Deet leads Rian on a harrowing journey through the tunnels of Thra, Seladon visits the Castle of the Crystal and sees a new side of the lords.

Cast: Taron Egerton, Alicia Vikander, Lena Headey, Natalie Dormer, Hannah John-Kamen, Anya Taylor-Joy, Caitriona Balfe, Awkwafina, Simon Pegg, Nathalie Emmanuel, Andy Samberg, Helena Bonham Carter, Mark Strong, Mark Hamill, Gugu Mbatha-Raw