Former Kilpatrick Ally Testifies Against Ex-Mayor A man who was an aide and longtime confidant to former Detroit Mayor Kwame Kilpatrick is testifying against him at his corruption trial. Derrick Miller once was part of the same case but he pleaded guilty to taking bribes a year before trial. He has known Kilpatrick since high school and played key roles in Kilpatrick's career in the state Legislature and Detroit city hall. Kilpatrick, his father Bernard and pal Bobby Ferguson are charged with running a criminal enterprise by rigging contracts and taking payoffs over many years. Kilpatrick resigned as mayor in 2008 in an unrelated scandal. Miller's testimony Monday is important. The indictment says he once acted as a bagman and passed a $10,000 bribe to Kilpatrick in a bathroom, among other corrupt acts.