Nick Reiner entered a plea of not guilty during his third appearance in Los Angeles Superior Court for his scheduled arraignment in the killing of his parents, Rob Reiner and Michele Singer Reiner. The 32-year-old faces two counts of first-degree murder with the special circumstance of multiple murders.Deputy District Attorney Habib Balian said his office is still awaiting a full autopsy report in the case, but all other evidence has been turned over to the defence.Reiner appeared in court in an enclosed custody area with his head shaved and wearing brown jail clothes.