The acclaimed drama concludes. In the aftermath of the Silo tragedy Karen feels she and Sam have no future and takes matters into her own hands. Niska and Astrid prepare to return to Berlin, but can Niska really walk away from her family? Joe leaves Laura shell-shocked with a frank admission. Hester seeks revenge and will stop at nothing to hurt Leo.
Elenco: Gemma Chan , Colin Morgan , Katherine Parkinson , Tom Goodman-Hill , Lucy Carless , Emily Berrington , Theo Stevenson , Ivanno Jeremiah , Pixie Davies , Will Tudor , Sope Dirisu , William Hurt , Carrie-Anne Moss , Ruth Bradley .