Romy Reiner

Nick Reiner -- the son of Rob and Michele Reiner, who's been arrested on suspicion of murdering them -- was missing for hours after his parents were found with their throats slit inside their Brentwood home ... TMZ has learned. Law enforcement sources say ... after Rob and Michele's daughter Romy…

Rob Reiner -- the legendary director -- and his wife Michele Singer Reiner have died ... TMZ has learned. As we told you ... two dead bodies were found in Rob and Michele's Brentwood home Sunday afternoon -- and law enforcement sources tell us it is the Reiners. Our sources say the two suffered…