At the trial, Steven pleaded not guilty for the entire thing, but there were three pieces of evidence securing the conviction. The first piece of evidence, was that Lynne died before 7:45 p.m. This was crucial because Truscott was back on the school grounds at 8pm, so if Harper had died past 8pm, Truscott would have had alibi. Although this evidence was backed up by Dr. Penistan, who had performed Harper's autopsy, and stated that based on the contents of Lynne's stomach, he believed that she died before 7:45 p.m. on the night she disappeared. Even though there were two prior possibilities as to when Harper had died, that would have proven Truscott innocent, the court still accepted this because there was more evidence to consider. The second