A group of people who knew each other years before discover that members of the group are being killed off one by one by someone who calls himself (or herself) The Green Ghost. The survivors gather at an old mansion to find out who is doing the killing and why, and discover that the murderer is a member of that very group.
as Lord Montague
as Lady Efra
as Lady Violette
as Dr. Ballon
as Sir James Rimsay
as La femme de chambre
as Lieutenant Savor
as Commandant Endicott
as Le médecin
as Abdoul
