The conviction of serial rapist Malcolm Rewa for another rape almost four decades after he committed the crime has triggered a review of unsolved rape cases. Rewa was senteced at the High Court in Auckland today to ten years in jail for a rape committed in the 1980s. He was already serving a life sentence and preventive detention for the murder of Susan Burdett in 1992 and sexual attacks on 25 women. Detective Inspector Scott Beard spoke to Lisa Owen.