In the last ten years Geocaching has become a very popular outdoor sport. The actual goal of geocachers is to locate a cache - which is the term used to refer to a hiding place for concealing and preserving "treasures." The geocacher uses a GPS unit to help them locate a cache that has been hidden by someone else. Caches can be found world-wide.The book "Caching In" is a tale of an avid geocacher, Samantha Samuelson, who unfortunately discovers a...