
Father Dowling stumbles into a kidnapping plot when he befriends a young woman who is about to disappear. Fearing the worst, Sister Steve signs on as the family's new maid to try and find out what happened to the girl.
It looks like a royal mess when Sister Steve find herself trapped in a Royal scandal. The Sister trades places with a frisky British noblewoman in order to infiltrate a trade delegation. Father Dowling has his hands full riding shotgun, trying to keep an eye open for the Sister's Royal killer.
The local hospital is the scene of some 'extra' deaths when Father Dowling and Sister Steve uncover a string of mystery murders. Father Prestwick insists on helping out and almost becomes the next victim.