In 2001, 20-year old ranger Carrie Nelson is found beaten to death in a park office. The senseless killing turns into a five year long "whodunit?" Investigators turn to science as they track down an elusive and unlikely killer.
In 2001, 20-year old ranger Carrie Nelson is found beaten to death in a park office. The senseless killing turns into a five year long "whodunit?" Investigators turn to science as they track down an elusive and unlikely killer.
