The Duchess of Duke Street. S01 E13. One Night's Grace.

First broadcast 27th November 1976.

All are intrigued when an attractive young lady asks to see Lord Haslemere -- who is she, what does she want, and more to the point, what is she after?

Gemma Jones ... Louisa Trotter
Christopher Cazenove ... Charlie Haslemere
Sally Osborne ... Grace Tyrrell (as Sally Osborn)
John Welsh ... Merriman
John Cater ... Starr
Holly De Jong ... Violet
Michael Hawkins ... Inspector Jason