Article continues below advertisementIn the months leading up to the deaths of Rob Reiner and Michele Reiner, their son Nick Reiner was allegedly spiraling, with repeated drug-fueled episodes that left his family increasingly fearful of what might happen next.A source who spoke to a news outlet on Monday, December 15, claimed that Nick had been living in his parents' guesthouse due to his unpredictable behavior.Article continues below advertisement"He was a ticking time bomb.