he implicated his friend, 19-year-old vincent holmes, as the man who killed kevin rice. >> vincent holmesa street kid. late teens. he was friends with william buck, hung out at the auburn manor apartment complex. really had a flat affect, borderline functioning intellectually. just a street kid with really no purpose in life. >> not surprisingly, when holmes was questioned, he pointed the finger at william buck. this created a problem. could forensics prove who pulled the trigger? several residents at the auburn manor apartments saw william buck and vincent holmes together on the night of the murder. they were outside the apartment drinking. the residents were able to identify the clothes each man was wearing. and with a search warrant, that clothing was retrieved from their respective apartments and sent to forensic analyst mary wong. she conducted the same tests she used on the hooded sweatshirt. no gunshot residue was found on either man's clothing. so the hooded sweatshirt and the shirts from both men were sent to skip palenik, one of the country's premier experts in trace evidence an