This was the second Anna Piegon book written by Nevada Barr, but the last one I read. I have enjoyed all these books and look forward to the newest edition to the series.
Anna is a park ranger and in each book she is assigned to a different National Park. In this book she is transferred Isle Royale National Park in Michigan. Two scuba-diving tourists exploring an old, early 1900s wreck find the body of Denny Castle, who died on his honeymoon night. Anna wonders about the disappearance of Donna Butkus, wife of fellow ranger Scotty Butkus. As Anna investigates the murder and disappearance she comes into contact with several memorable characters. Anna gets herself into a situation near the end of the story that totally creeps me out. Barr explores some socially taboo territory in this book.
All in all I enjoyed this book, but liked the later books better. 4