>>> in the search for denise o'neill's killer, investigators' prime suspect lived just a few feet awayom denise's apartment. it was her neighbor, luis caballero. >> when we first walked up on caballero, he told us, he didn't say it directly, but he really didn't like denise. he described her as being snooty. >> caballero denied being involved with her murder and said he had no relationship with her other than to say hello. >> we discovered that mr. caballero was in serious financial trouble. he had a phone bill of $6,000 from phone sex lines that he had had been calling. that he was behind on his rent. and that he could be evicted at any time. >> detectives obtained a search warrant for caballero's apartment. >> what struck me immediately was the large amount of pornography inside the closet. the type of pornography that was there dealt with a lot of violence. it was real, real sick stuff. >> we did not find denise o'neill's fingerprints inside caballero's apartment. >> but they did discover other clues. >> i walked into the actual bedroom area, and as i started to turn to the left, i

. >> life was an adventure for 28-year-old denise o'neill.