[Warning: Potentially Triggering Content] Rob Reiner, the legendary filmmaker behind some of the most comforting movies of our lives, and his wife Michele Singer Reiner, were not just industry names. They were parents who, by all accounts, never stopped fighting for their child even as that fight took everything out of them. Rob's career was built on laughter and heart. But in 2016, he stepped into darker, more personal terrain with Being Charlie, a film co-written by his son Nick that explored addiction and self-destruction. At the time, it felt like a painful but hopeful window into a family trying to heal. Nick also spoke about his "dark years," struggles with drugs that began too young, and his repeated stints in rehab. Rob and Michele stood beside him, even when the road seemed endless. Related: Nick Reiner Facing The Death Penalty As Bill Hader Has Been Dragged Into This Tragedy Nearly a decade later, that road led to somewhere unthinkable. On Sunday, 78-year-old Rob and his 68-year-old wife were found stabbed to death inside their Brentwood home. One source with knowledge of the situation described the scene to People on Tuesday as: "A Hollywood horror-scene nightmare." The next day, police confirmed that Nick, who had reportedly been living with his parents, was arrested on suspicion of murder. He is being held without bail. And while no motive has been released, insiders told People there'd been growing concern about Nick's behavior in the days leading up to the tragedy. And yet still, some folks close to the family are painting a picture of relentless effort and love. As one source explained to the mag on Tuesday: "They were such a tight-knit family. They did everything together." But love does not always mean salvation. The same source went on to say: "They could never reach stability with Nick. They tried everything - giving him space, keeping him close - but his struggles are so deep. It's just a parent's worst nightmare." Another insider echoed that heartbreaking truth: "They were such lovely people, and tried in every way to help their son." Wow. As we've been following, there have been reports of a heated argument between Rob and Nick at Conan O'Brien's holiday party the night before the couple's deaths, with witnesses describing Nick as erratic and alarming. Less than 24 hours later, Rob and Michele were gone. We continue to send our condolences to the Reiner family, as well as their friends and loved ones in mourning. If you or someone you know is experiencing substance abuse, help is available. Consider checking out the resources SAMHSA provides at https://www.samhsa.gov/find-help/national-helpline or check out StartYourRecovery.org. [Image via Michele Singer Reiner/Instagram/MEGA/WENN] The post Rob & Michele Reiner Never Stopped Trying 'Everything' To Help Troubled Son Nick: 'His Struggles Are So Deep' appeared first on Perez Hilton.