reporter: abdul majid giaka is the super-grass billed as the lockerbie-trial star witness. he had presented to himself to the cia as working for libyan intelligence. so, this is somebody who would seem to be able to put the finger on the culpability of megrahi and fhimah in this. reporter: from behind a screen, with his voice disguised electronically, abdul majid told the court how libyan intelligence planned the bombing. reporter 2: he told the court he'd seen explosives in the desk drawer of one of the defendants, and he had seen both defendants with a brown suitcase. reporter 3: abdul majid claimed that before the bombing he passed all this on to his cia handlers. he never mentioned to us anything about any knowledge at all about the pan am bombing. and we were handling him. he was asked that question. he knew nothing about it. all i know is that i spent a lot of time with him initially. and i'm a skeptical kind of guy, you know, until proven otherwise. i found him just... honest. um... i wouldn't believe he would tell a lie about nothing. i think that he changed the sto

reporter: abdul majid giaka is the super-grass billed as the lockerbie trial's star witness. abdul majid told the court how libyan intelligence planned the bombing, and that the two accused were fully involved. today, he was a poor witness for the prosecution. i remember there being quite a laugh amongst the people that were watching the evidence. just because he was just so... he just seemed to be crazy. it like just watching a fantasist being given 20 minutes to speak in an uncontrolled way about their fantasies. the lack of credible evidence was what converted me to realizing the two accused men clearly could've had nothing to do with it. suse: i felt very apprehensive before the verdict. but based on the evidence i heard, i believed we had the right guys. we waited for the judges to come onto the bench to deliver their... verdict and we had absolutely no idea what was gonna happen. i believed the evidence, in its totality, made it so compelling. even though there was no smoking gun. i can remember holding phil reid's hand. we were sitting next to each other and i can reme