Guest Stars Derek Jacobi as William Drew Nina West as Parlourmaid Richard Warner as Count Krempelstein Kenneth Barrow as Hargreaves Henry Szeps as Laval Karin MacCarthy as Sybil Fitzwilliam Sara Clee as Gerda Krempelstein Ralph Truman as Foreign Secretary Simon Gough as Jack Bellingham Clifford Parrish as Dr. Ewing David Tate as Pol. Serg. Tapling Peter Arne as Colonel Davidoff Lisa Harrow as Beatrice Graham Denise Coffey as Miss Baines David Webb as Musgrove Richard Pearson as Marquess of Macclesfield Peter Eyre as George Fitzwilliam