Stanley and Anatole's true colours put Laura and her family directly in harm's way. With Mia speaking at the commission, Laura must do everything in her power to stop an awful attack. Leo and Mattie return to the Elster house where Leo comes to understand a painful truth, but Mattie has a secret that could knock their fledging relationship off course. Niska continues her mysterious journey that takes her to Wales, where she must defy all her instincts to survive.
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 .