Arizona Department of CorrectionsMichael and Rudy Apelt Rudi Apelt, a German national sentenced to death in Pinal County in 1989, cannot be killed because he is mentally retarded, Maricopa County Superior Court Judge Sylvia Arrellano ruled yesterday.Both Apelt and his brother, Michael, were sentenced to death after they brutally murdered Michael's wife, Cindy Monkman, in hopes of cashing in on an insurance policy. Both brothers then claimed they were retarded -- and therefore could not be execut
