The son of US film director Rob Reiner pleaded not guilty to the fatal stabbing of both of his parents when he appeared in a Los Angeles court on Monday. Nick Reiner faces two counts of first-degree murder over the double killing that sent shock waves through Hollywood days before Christmas. The 32-year-old was arrested on December 14 after the bodies of his filmmaker father and his mother, photographer Michele Singer Reiner, were discovered at their home in the upmarket Brentwood neighbourhood...