“ During closing argument the prosecutor told the jury that the sixteen-gauge shotgun was not the weapon that killed the deceased, but that any man who was with another man who had the shotgun and shells for its was the type of person that deserved the death penalty. ”

“ Petitioner was sentenced to death for murder. Six items of exonerating evidence were not disclosed to him at trial. The court below affirmed on the ground that the prosecution's duty to disclose exonerating evidence depends upon a request ”