I recall reading this NPR article that says about 2/3 of homicides are resolved. In fact, since you specified 'urban' killings, those trend higher than rural ki

I recall reading this NPR article that says about 2/3 of homicides are resolved. In fact, since you specified 'urban' killings, those trend higher than rural killings. http://www.npr.org/2015/03/30/395069137/open-cases-why-one-third-of-murders-in-america-go-unresolved http://www.npr.org/2015/03/30/395069137/open-cases-why-one-t...