Becky has moved in with Matilda Crawley and seems to have a bright future ahead of her. However, war is brewing which threatens the fortunes of the scheming social climber and everyone she knows.

Cast: Olivia Cooke, Johnny Flynn, Claudia Jessie, Tom Bateman, Simon Russell Beale, Richie Campbell, James Chalmers, Sian Clifford, Martin Clunes, Frances de la Tour, Niamh Durkin, Tom Edward-Kane, Orli Goldstein, Mike Grady, Andrew Greenough