This book is part of a book series called Unexplained Phenomena .

This book has been graded for interest at 10-14 years.

There are 48 pages in this book. This book was published 2010 by Capstone Press .

Robin Doak, a former editor of Weekly Reader and U. S. Kids magazine, has 18 years of experience writing for children. She has written more than 35 books for young readers on various subjects including history, geography, and science.