When politician's wife and undercover spy Helen Webb learns that her lover has been murdered, the Black Doves recruit an old friend to help protect her.

Cast: Keira Knightley, Ben Whishaw, Sarah Lancashire, Andrew Buchan, Andrew Koji, Omari Douglas, Kathryn Hunter, Sam Troughton, Ella Lily Hyland, Isabella Wei, Adam Silver, Nathan Stewart-Jarrett, Hannah Khalique-Brown, Thomas Coombes, Lizzie Hopley, Agnes O'Casey, Molly Chesworth, Ken Nwosu