hide, so clark turned up the pressure. and when he told barnes he had information that he was in on the plot, barnes caved, and he began to tell a story that would break the case wide open. >> he just decided, do you know what, i'm going to tell the truth. >> barnes admitted he was part of the crazy conspiracy that led to the killing of brian wells the pizza delivery man, a fact he laid out in all its sorted detail. >> he relived the whole thing from the minute he was picked up that day by marjorie diehl-armstrong to every location that they went through and what his role was, what everybody else's role was, and how the whole thing was to go down. >> barnes said floyd stockton was also part of the conspiracy. stockton, remember, was rothstein's old friend who once lived in his house. when stockton found out he had been ratted out, he decided to talk, too, but only in exchange for immunity, a deal barnes never asked for.