The defense attorney representing a St. Louis man who was accused of killing a Parkway West senior in April 2020 says that the prosecutor handling the case for the Circuit Attorney’s Office withheld crucial, potentially exculpatory evidence the office had in its possession for more than two years. Carieal J. Doss, 18, was found dead on April 14, 2020, on a sidewalk in the Jeff-Vander-Lou neighborhood, having suffered a gunshot wound to the head. Levi Henning, who is now 21, was charged with Doss’ murder almost a year later.