Guest Stars Orla Brady as Countess Vera Rossakoff Eleanor Tomlinson as Alice Cunningham Fiona O'Shaughnessy as Katrina Samoushenka Tom Wlaschiha as Mr. Schwartz Morven Christie as Elsie Clayton Tom Austen as Ted Williams Simon Callow as Dr. Lutz Rupert Evans as Harold Waring Nigel Lindsay as Francesco Richard Katz as Gustave Sandy McDade as Annabel Rice Stephen Frost as Chief Inspector Lorna Nickson-Brown as Lucinda LeMesurier Isobel Middleton as Policewoman Patrick Ryecart as Sir Anthony Morgan Tom Chadbon as Dr. Burton Nicholas McGaughey as Insp. Lementeuil