police had just arrested suspected drug dealer miguel quiroz for the attempted murder of garrett warrensearch warrant on quiroz's car when they found garrett warren's photo and address in the trunk. he identified garrett as a shooter. but the case against quiroz wasn't adding up. a closer look at the evidence led to a stunning discovery. garrett warren wasn't out of danger yet. here is josh mankiewicz with "the plot thickens". ♪ ♪ ♪ >> fade in, los angeles county, california. garrett warren was gunned down, shot four times in his own home, but somehow survived. it fits his character, really. a hollywood stuntman, martial artist, and former fighter. not only did he survive, he was able to identify a shooter. a man who had been caught with what looked like a hit note in his car. and they tell you his name is miguel quiroz? >> yes. >> did that name mean anything to you? >> not at the time at all. >> it's sounded at first like a strong case. but the more law enforcement and prosecutor chun investigated, the less clear became. >> you did a lot of work and was somewhat you did was help prove