Rob and Michele Reiner's son had long struggled with behavioral issues, but ultimately it's the choices he made that took him down this destructive path. That's what a new source is claiming. As we've been reporting, the 78-year-old filmmaker and his 68-year-old wife were found by their daughter, Romy Reiner, brutally slain in their Brentwood, Los Angeles home on Sunday afternoon. Rob and Michele's son Nick, 32, was arrested and booked on suspicion of murder hours later.