Guest Stars Caroline O'Neill as Win Thursday Abigail Thaw as Dorothea Frazil Sara Vickers as Joan Thursday Jack Bannon as Sam Thursday Shvorne Marks as Monica Hicks Anya Taylor-Joy as Philippa Collins-Davidson Simon Kunz as DI Bart Church Lucy Boynton as Petra Briers Struan Rodger as Wilf Karswell Nell Tiger Free as Bunty Glossop Daniel Ings as Terence Black Ian Peck as Ossie Lloyd Diane Fletcher as Miss Bronwen Symes Imogen Gurney as Edwina Parrish Susy Kane as Miss Victoria Danby Lynn Farleigh as Tabby Gardiner Michael J. Shannon as Nahum Gardiner Maya Gerber as Stephanie Hackett Kate Lamb as Daisy Weiss Desmond Barrit as Stephen Fitzowen Eve Perry as Antonia Lockwood Thomas Arnold as Cendree Wyvern Eleanor Northcott as Maud Ashenden Emily Warren as Shelly Thengardi Tom Prior as Billy Karswell Uncredited Colin Dexter as Visitor at Museum
