Nick Reiner was reportedly not at the Brentwood, California home of his parents, Rob Reiner and Michele Singer Reiner, when their bodies were discovered. Per a Monday, December 15, report from ABC News, investigators believe Nick, 32, left the Brentwood neighborhood and traveled to an area near the University of Southern California in University Park, Los Angeles. According to the outlet, authorities were able to "quickly" find him at a metro station near the campus and arrested him for murder around 9:15 p.m. local time, approximately six hours after his parents were found dead.