Chicago’s crime problem is made worse when murders like the wave that gripped Chicago last weekend go unsolved. CBS 2’s Derrick Blakley reports that while other big U.S. cities have shown improvement in arrests, Chicago lags behind. Two years ago, Chicago Police Superintendent Eddie Johnson announced plans to hire 200 new detectives to help solve the city’s soaring number of murders. ---SNIP--- Back in 2000, the city solved 40 percent of murders that occurred that year. In 2009, 30 percent of murders were solved. Last year, 17 percent were solved, Blakley reports.