Guest Stars Neil Stuke as Dr. Haydock Joanna Lumley as Dolly Bantry Hannah Waddingham as Lola Brewster Charlotte Riley as Margot Bence Brennan Brown as Hailey Preston Caroline Quentin as Heather Badcock Jonathan Coyne as French Officer Hugh Bonneville as Insp. Hewitt Victoria Smurfit as Ella Blunt Lindsay Duncan as Marina Gregg Samuel Barnett as Sgt. Tiddler Nigel Harman as Jason Rudd Don Gallagher as Man in Livery Will Young as Casey Croft Martin Jarvis as Vincent Hogg Michele Dotrice as Mrs. Hubbard Olivia Darnley as Cherry Baker Anna Andresen as Maisie Cooper Gene Goodman as Louis Charles Isabella Parriss as Marie Thérèse Lois Jones as Primrose Dixon
