The cases of two long-jailed sex offenders are due to go under the spotlight at the United Nations human rights committee in October. The committee has invited Wellington lawyer Tony Ellis and a government representative to Geneva for a rare chance to speak about the cases of two men serving preventive detention terms. Allan Brian Miller was sentenced to the open-ended term of preventive detention 26 years ago, and Michael John Carroll was sentenced 29 years ago. Both have multiple rape convictions, and both are still in prison. Their arguments about the independence of the Parole Board, and the way preventive detention is served, have already been through the New Zealand court system.