he's on trial for 19 murders and a lot of other charges. they seem to be more focussed on proving he wasn't an informant than anything else. >> yeah. there's no question about. that and being an informant was the worst possible thing you could be in south boston. and bulger knew that he was going get away with it because no one would ever believe that he was ratting out his friends. the i.d. card that you showed, the 700 page file, which was about this tall and put right in front of the witness who was testifying about it shows a very different story. that bulger provided details on murders, on drug deals, armed robberies, even criminal fugitives leading to several arrests. and the prosecutor said, look, he was not going to engage in the fiction that bulger was not an informant. and he mocked what he called bulger's ego, his tampa to preserve his reputation saying it was a ridiculous contention saying that he knew that 15 years of information provided by bulger told otherwise. that in fact, yes, whitey bulger, the alleged murderer of