The acclaimed drama concludes. In the aftermath of the Silo tragedy Karen (Ruth Bradley) feels she and Sam (Billy Jenkins) have no future and takes matters into her own hands.
Niska (Emily Berrington) and Astrid (Bella Dayne) prepare to return to Berlin, but can Niska really walk away from her family? Joe (Tom Goodman-Hill) leaves Laura (Katherine Parkinson) shell-shocked with a frank admission. Hester (Sonya Cassidy) seeks revenge and will stop at nothing to hurt Leo (Colin Morgan).