Guest Stars Felicity Kendal as Marcelle Robart William Dexter as Inspector Banard Constantine Gregory as Jeweller Derek Newark as Maurice Keith Marsh as Leon Marius Goring as Henri Thibaud Michael Bates as Delacroix Gillian Lind as Madame Robart Frank Maher as 1st Thug Inigo Jackson as Stephane Nina Huby as Arlette Terence Yorke as 2nd Thug
