Guest Stars Rosalie Williams as Mrs. Hudson Colin Jeavons as Inspector Lestrade Sophie Thompson as Agatha Gwen Ffrangcon-Davies as The Dowager Nickolas Grace as Bertrand Sarah McVicar as The Hon. Charlotte Miles Robert Hardy as Charles Augustus Milverton David Mallinson as Colonel Dorking Serena Gordon as Lady Eva Blackwell Norma West as Lady Diana Swinstead
