http://www.mercurynews.com/cold-casesHomicide cold cases grow chillier as clues disappear, police resources dwindle
As 9-year-old Beth Ringheim struggled to make sense of the gruesome murder scene in her fathers Dublin home, she formed a terrifying question: Who would do such a thing?... Such cases continue to dog detectives in agencies around the Bay Area as resources dwindle or clues and memories fade away.
A very interesting set of articles as well as a map.