Charlie Chan, with son Jimmy on a week's pass from the Army, takes up a request for help at a castle-home, miles from anywhere in the American desert south-west and inhabited by an eccentric, reclusive historian and his wife, a descendant of Lucrezia Borgia. Once there, he finds the request's legitimacy denied by all who are present, but still necessary as one houseguest has already been murdered, the other guests are at each other's throat, and the Borgia-related chatelain is suspected...
as Charlie Chan
as Jimmy Chan
as Lucy Borgia Manderley
as Paul Manderley
as Dr. Retling
as Walter Hartford
as Brenda Hartford
as Mme. Saturnia, aka Lizzie
as Watson King
as Carl Detheridge
as Prof. Gleason
as Arthur Fletcher
as The Bus Driver
as The Hotel Manager
as The Majordomo
as (unconfirmed)
as (scene deleted)
