books.google.com - The Aldens go to Maui to help their grandfather's cousin on her pineapple plantation. Soon strange things begin to happen, and people become quiet when the story of the black pearl is mentioned. Illustrations....https://books.google.com/books/about/The_Black_Pearl_Mystery.html?id=sXnwHOa5KvgC&q=Norma+Kane&utm_source=gb-gplus-shareThe Black Pearl Mystery