Grim-faced Nick Reiner shackled, wearing suicide smock for first appearance since being charged with murdering parents

LOS ANGELES — Rob Reiner’s twisted son Nick Reiner looked grim-faced and wore a blue suicide prevention vest as he appeared in Los Angeles court for the first time Wednesday after he was charged with hacking his parents to death inside their Brentwood mansion.The accused double-murderer only appeared briefly in court and was shackled behind glass, and did not enter a plea with his arraignment continued to Jan.7.Reiner was hit with two counts of first-degree murder with a special circumstance Tuesday, which could see him face the death penalty in the high-profile double-slaying.He allegedly knifed both Reiner, 78, and Michele Singer Reiner, 70, early Sunday morning and was later arrested roughly 15 miles away hours later, according to authorities.Footage shows the troubled middle child put his arms up as LAPD officers converged on him near the University of Southern California campus.His arraignment was initially scheduled for Tuesday, but his celebrity lawyer Alan Jackson said he was not medically cleared to travel to court.The Reiners’ daughter, Romy, stumbled on the gruesome crime scene when she went to check on her parents after a massage therapist received no response at the gate, the New York Times reported.Nick had long faced troubles with drug addiction, circling in and out of rehab at least 17 times.He’s also had a tumultuous relationship with his father for years, including when he had an argument with his parents at Conan O’Brien’s holiday party, according to sources....