they included the failure to raise the issue of his client 's mental competency ; failure to thoroughly investigate and present evidence against glen gore ; failure to flesh out the fact that terri holland had also testified against karl fontenot and tommy ward ; failure to inform the jury that ricky joe simmons had confessed to the murder and had even done so on a videotape that barney actually possessed ; failure to attack ron 's confessions and suppress them before trial ; and failure to call mitigating witnesses during the penalty phase .