We've gotten kind of into this show on A&E called "The First 48," which follows homicide detectives during the first 48 hours of a murder investigation. As the narrator intones over the ominous major-second chord, "their chance of solving a crime is cut in half if they don't get a lead in the first 48."

Funny, they never seem to follow the SFPD around on this show. Know why? Because they've made no arrests in of the homicides reported this year. Eighty percent! That's outrageous! That's actually lower than the clearance rate in the big Chronicle brouhaha in 2002 over former Chief Lau that forced him to resign (he solved 28% of all violent crimes and 50% of murders).

Chris Daly and Tom Ammiano have called for a performance audit of the SFPD, and Ross Mirkarimi is demanding to know why no one's patrolling crime hot spots in his district. (Probably because you're doing such a good job on your own, Ross!) Daly's also called for the creation of a prevention plan on the issue.

After the jump -- some unhappy-making numbers.

eighty percent