Nick Reiner, son of filmmaker Rob Reiner and photographer Michele Singer Reiner, has pleaded not guilty to two counts of first-degree murder concerning the stabbing deaths of his parents. The plea was entered during a court appearance, as the ongoing investigation continues with autopsies still incomplete. Prosecutors have indicated that Reiner could potentially face the death penalty as the case develops. Family members are reportedly distancing themselves from the legal defense as they attempt to return to normal life amid the unfolding tragedy.