In a spooky mansion, one of three sinister spinsters tries to poison her nephew's wife to steal a large inheritance.
Dr. Robert Armour
Anne Armour
Willow, Opal's Companion (as Pat Owens)
Aunt Judith Armour
Aunt Opal Armour
Aunt Hester Armour
Dexter the Gardener
Diana Wilson
Sgt. Jenkins
Det. Inspector York
Mrs. Wilson
