Billy Crystal, Larry David, Martin Short, and more stars shared a heartfelt tribute for Rob and Michelle Reiner, who were killed in a fatal stabbing.

Rob Reiner and his wife Michele died of multiple sharp force injuries, the Los Angeles County Medical Examiner's Office ruled. The manner of death was ruled a homicide. The couple's son Nick Reiner has since been charged with two counts of first-degree murder in connection with the deaths of his parents.

Reiner and his wife, Michele Singer Reiner, were found dead inside their Brentwood, Calif. home on Sunday afternoon at 78 and 68, respectively. The Los Angeles Police Department said at the time that their deaths were being investigated as a homicide, but that they had not identified a suspect and no one had been detained.

The Los Angeles County Medical Examiner's office has announced the official causes of death of Rob Reiner and Michele Singer Reiner.

After finding the slain couple, investigators focused on their younger son, Nick, as a suspect. He was formally charged with murder on Tuesday.

Nick Reiner, who didn't enter a plea Wednesday, faces murder charges after, authorities say, he killed his parents at their Los Angeles home over the weekend.

Many people mourn their favorite artists through revisiting their work, and so in honor of Rob Reiner, here’s where to watch so many of his best films online.

Some of Rob and Michele Reiner's closest friends, including Billy Crystal and Larry David, have released a heartfelt statement mourning the couple