Rob Reiner and his wife Michele Singer Reiner were found dead in their Brentwood home after Los Angeles Fire Department responders answered a medical-aid call and Los Angeles Police Department detectives opened a homicide investigation when early examinations found lacerations consistent with stab wounds to the throat.Investigators questioned and later arrested the couple’s middle son, Nick Reiner, 32, who was booked on suspicion of murder and is being held on $4 million bail while prosecutors review forensic, witness and digital evidence and await the Los Angeles County Medical Examiner’s determination of cause and manner of death.The case has drawn wide attention in Hollywood and beyond, with friends and public figures posting tributes and Donald Trump posting on Truth Social controversial comments, while authorities urged the public to allow the investigative process to proceed without speculation as testing and interviews continue.