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 lacerations consistent with a knife. The LAPD's Robbery Homicide Division is still investigating. Dispatch audio captures a firefighter calling for backup to the Brentwood mansion around 3:30 PM ...