They were killed on the same day, in the same way. One of the deaths captured the attention of a city and spurred the Los Angeles Police Department into overdrive. The other slipped by unnoticed, leaving a lone detective with little more to go on than hope. Adrianna Bachan died first. Shortly after 3 a.m. March 29, Bachan, 18, and a friend stood at the intersection of Jefferson Boulevard and Hoover Street on the edge of the USC campus. Returning home after a night out, the two students stepped into the crosswalk and started across Jefferson.