Article continues below advertisementThough Rob and Michele Reiner's addict son Nick has his struggles, an insider claimed that before the latter was accused of brutally murdering his parents, they "were such a tight-knit family.""They did everything together," the source spilled to a news outlet.Article continues below advertisementRob and Michelle Reiner Desperately Tried to Help Son NickSource: @michelereiner/instagramNick Reiner's 'deep' addiction struggles were 'a parent's worst nightmare,' admitted an insider.