A Missouri man has been in prison for 33 years. A new hearing could determine if he was wrongfully convicted.

A hearing this week will determine if Missouri inmate Christopher Dunn should go free after spending more than three decades in prison for a murder that he has always said he did not commit. Dunn's conviction and life sentence without parole hinged on the testimonies of two witnesses — a preteen and a young teenager — who have since admitted to lying during the trial.

St. Louis prosecutors are now convinced Dunn is telling the truth, but lawyers for the Missouri Attorney General's Office disagree and will argue for keeping him behind bars. Dunn, 52, is serving a sentence of life without parole at the state prison in Locking, Missouri, but is expected to attend the hearing before Judge Jason Sengheiser that begins Tuesday.

The hearing follows a motion filed in February by St. Louis Circuit Attorney Gabe Gore. A Missouri law adopted in 2021 allows prosecutors to request hearings in cases where they believe there is evidence of a wrongful conviction.