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 Nell Tiger Free as Bunty Glossop Lucy Boynton as Petra Briers Daniel Ings as Terence Black Struan Rodger as Wilf Karswell Michael J. Shannon as Nahum Gardiner Ian Peck as Ossie Lloyd Susy Kane as Miss Victoria Danby Imogen Gurney as Edwina Parrish Maya Gerber as Stephanie Hackett Kate Lamb as Daisy Weiss Desmond Barrit as Stephen Fitzowen Emily Warren as Shelly Thengardi Lynn Farleigh as Tabby Gardiner Thomas Arnold as Cendree Wyvern Diane Fletcher as Miss Bronwen Symes Eleanor Northcott as Maud Ashenden Eve Perry as Antonia Lockwood Tom Prior as Billy Karswell Uncredited Colin Dexter as Visitor at Museum
