Article continues below advertisementRob Reiner and his wife, Michele Singer Reiner, were allegedly murdered by their son Nick.According to a Monday, December 15, report, the 32-year-old is in custody after his parents were found one day prior with stab wounds on their throats.The duo was dead at the scene in their Brentwood, Calif., home, when police arrived. Rob was 78 at the time of his passing, while Michele was 68.Article continues below advertisementSource: MEGARob and Michele Reiner were murdered.Rob and Michele shared three kids: Jake, Nick and Romy.