This book came out a year ago, and is now in paperback. It is the true story of the disappearance of a National Park Ranger in the Sierra Mountains of California. Eric Blehm researched this book thoroughly and blends the life story of Ranger Randy Morgenson with descriptions of the search (inside and outside the park) that ensued after he went missing. The story takes a number of twists and turns, and is suspenseful and very well written. It won a National Outdoor Book award. My only criticism concerns the deficiency of certain kinds of photographs and maps that would have made the book even better.
I highly recommend this book.