life, and believing we would always do the right thing, no matter what, then you're told a murder is too politically sensitive, especially a murder where there's two innocent men in prison and there's misconduct by our own. you're ignoring this? >> callahan refused to comply with carper's orders and continued working on the case. >> those two guys were innocent. i had to keep going. >> he soon discovered a number of leads in the case that were never followed. >> there were any number of suspects. it was like murder on the orient express or something. >> when i reviewed the case, there were several other suspects that for whatever reasons the original investigators didn't follow those leads. one of the suspects in the case, phil stark, he was a banker by day.