Edward Fox. Edward Fox was 37 in Dr. Watson and the Darkwater Hall Mystery as 'Dr. Watson'.
Elaine Taylor. Elaine Taylor was 31 in Dr. Watson and the Darkwater Hall Mystery as 'Emily'.
Christopher Cazenove. Christopher Cazenove was 29 in Dr. Watson and the Darkwater Hall Mystery as 'Sir Harry'.
Jeremy Clyde. Jeremy Clyde was 33 in Dr. Watson and the Darkwater Hall Mystery as 'Miles'.
John Westbrook. John Westbrook was 52 in Dr. Watson and the Darkwater Hall Mystery as 'Bradshaw'.
Terence Bayler. Terence Bayler was 44 in Dr. Watson and the Darkwater Hall Mystery as 'Carlos'.
Carmen Gómez. Carmen Gómez was >> in Dr. Watson and the Darkwater Hall Mystery as 'Dolores'.Anthony Langdon. Anthony Langdon was 35 in Dr. Watson and the Darkwater Hall Mystery as 'Black Paul'.
Ande Cunningham. Ande Cunningham was >> in Dr. Watson and the Darkwater Hall Mystery as 'Black Paul's Woman'.Marguerite Young. Marguerite Young was 67 in Dr. Watson and the Darkwater Hall Mystery as 'Mrs. Hudson'.
Derek Deadman. Derek Deadman was 34 in Dr. Watson and the Darkwater Hall Mystery as 'Haddocks'.James Cellan Jones. James Cellan Jones was >> in Dr. Watson and the Darkwater Hall Mystery as 'Director'Kingsley Amis. Kingsley Amis was 52 in Dr. Watson and the Darkwater Hall Mystery as 'Writer'
Arthur Conan Doyle. Arthur Conan Doyle would have been no older than 71 in Dr. Watson and the Darkwater Hall Mystery as 'Characters'