detective tom wallace. what went wrong? >> from transposing numbers wrong. >> he admit the error and said it was minor, that conrad truman did not deserve a new trial. . >> did that change anyone's opinion? >> they didn't change my opinion. >> nor did it change the opinion of the deputy d.a. tim taylor, who decided to take on the task of prosecuting coleman once again. >> i wanted fresh eyes. i went through all the evidence. even with the medical examiner changing his opinion, i still felt there was enough to go forward. we knew going into it, it was going to be tough. >> at trial, the prosecution's case was familiar, starting with the officers who testified about conrad's rambling off an