. >> and found a business card, it was detective rick jackson lapd robbery homicide unit. >> robberydeal. >> i guess that is the tip of the spear, if you will. and, it made me interested. >> so interested, he called detective jackson, -- >> he says you know a guy named duncan martinez? >> i said yes i know a guy called duncan martinez. >> i said is there anything i can help you with? >> i immediately went to, we can use this, we need to get it on tape. >> use this? this was the excuse duncan had given the police for the burglary. >> he said, i only did this because somebody is extorting me as i witnessed somebody get murdered in los angeles, and this person that i know told me if i didn't do this burglary for him, then he was going to tell the police that he knew about my involvement in this l. a. thing. >> wow. >> everything is done, we can't use what he told us initially against him. >> what is against the rules? >> bingo, all duncan's blabbing just might be his undoing. remember, under the conditions of his king for a deal, dunkin'couldn't talk to anybody about the case. >> he was

and rick jackson. powerless to intervene, they waited for the board's decision.l came flooded back. as if decades had vanished. and the strange, terrible events had only just occurred. >> i worked homicide, but by the end of my career what it was 20 years. and you also think that you have seen everything, and this is one of those cases that, that just did not make any sense. >> no, it did not. still does not. and maybe never well. it was just a few days after the summer solstice. that longest day of the year. it was june 24th, 1990. >> my supervisor called and said hey, i've got an interesting case for you and frank. so frank and i went right to the coroner's office to view the body. >> frank was detective frank garcia, jackson's partner. >> he had multiple stab wounds. and his throat was slit. >> it was a murder, all right, close-up. personal. bloody. >> whoever did this wanted to make sure that it was done. no one was going to survive this. >> he looked to be in his early twenties, but he had no i. d.. so they called him john doe 1:35. l. a.'s 135th i unidentif