Prosecutor Kim Gardner seeks to overturn 1990 murder conviction.

St. Louis Circuit Attorney Kim Gardner is seeking to overturn the conviction of Christopher Dunn, who has been in prison for over 30 years for a murder that Gardner believes he did not commit. Dunn was sentenced to life plus 90 years in prison for the 1990 murder of Recco Rogers, but Gardner says there is clear and convincing evidence that shows he was wrongly convicted. No physical evidence linked Dunn to the crime, and the trial hinged on the testimony of two young witnesses who have since admitted they were not telling the truth.