Article continues below advertisementRob Reiner and Michele Reiner's son Nick was missing "for hours" following the brutal slaying of the Hollywood filmmaker and his wife on Sunday, December 14. Nick, who has been arrested in connection with the murder of his parents, allegedly fled the scene, as he was unaccounted for in the hours following the murder, a news outlet reported on Monday, December 15.Article continues below advertisementNick Reiner Was Missing for 'Hours'Source: MEGANick Reiner was missing for 'hours' following the murder of his parents, Rob and Michele Reiner.