The Miracle Detective by Randall Sullivan

I was checking out Pope Benedict's Jesus of Nazareth from the library and happened to see this book in the same section of shelving.

Sullivan is a reporter for Rolling Stone who became interested in the investigation of miracles, specifically Marian apparitions. Much of the book is about the time he spent in Medjugorje, where he became acquainted with most of the principal players. The book also contains some interesting interviews with Fr. Benedict Groeshel and Fr. Gabriel O'Donnell.