For an isolated country house... er... castle there certainly seems to be a motley collection of guests including a doctor, a sculptor and a private detective. Number 2 son (Victor Sen Yung) is also there to help with an eccentric mystic (Ethel Griffies) tagging along to "help".
It is all a glorious muddle and a shameless romp reusing every "Middles Ages" prop the studio had in it's store including two suits of armour! A great, if unoriginal, example of a dark house mystery.
