True crime has a way of making reality feel scarier than any horror movie. For years, ABC's 20/20 has been a staple for viewers who love a deep dive into real-life mysteries, from harrowing interrogations to cases that seem straight out of a nightmare. This week, the show is heading back into the darkness with a story that's equal parts tragic and terrifying.
Season 49, Episode 3, titled "Born to Kill," revisits the case of 22-year-old Cati Blauvelt, who vanished from her hometown of Simpsonville, South Carolina. Her family knew something was wrong immediately and reported her missing, launching a frantic search. The heartbreaking discovery came when two friends entered a dilapidated, abandoned house and found Cati stabbed to death in the basement. It was a scene so grim that even seasoned investigators were shaken.
Initially, suspicion fell on the two men who found her, but they were quickly cleared. The investigation then turned to those closest to Cati, especially her estranged husband, Army recruiter John Blauvelt. His behavior raised red flags, but before authorities could close in, he went AWOL, leaving behind his 17-year-old girlfriend and vanishing for years.
In an exclusive sneak peek, 20/20 takes us back to that house, described as something "out of a horror scene." Overgrown and tucked deep into the woods, it was nearly invisible from the road. Inside, the walls are riddled with holes, the floors are covered in dirty mattresses and trash, and Satanic graffiti marks nearly every surface. For local teenagers, it was a secret hangout—a place to smoke, drink, and escape adult supervision. But after what happened to Cati, that all changed. The footage lingers on the eerie interior before cutting to static and descending into the basement, driving home the horror of the crime.
The episode promises a comprehensive look at the years-long manhunt for John Blauvelt. After evading capture for so long, a tip finally led to his arrest in Medford, Oregon. He was eventually tried, convicted of murder, and sentenced to life in prison, though he is currently appealing the verdict. 20/20 brings its signature investigative approach, speaking with investigators and those who knew Cati to piece together the full story.
Hosted by David Muir and Deborah Roberts, 20/20 remains television's most-watched newsmagazine. The series continues to dominate Friday nights, and with its 50th anniversary on the horizon, it shows no signs of slowing down. Executive producer Janice Johnston keeps the award-winning team intact, ensuring the same high-quality journalism that has made the show a trusted name for decades.
For fans of true crime, this episode is a must-watch. It's a reminder that the scariest stories aren't always fiction—they're the ones that happen in real life, in quiet towns, and in houses that hide unimaginable secrets. Tune in to see how justice was finally served for Cati Blauvelt.
If you're a fan of gripping investigative series, you might also enjoy this exclusive look at another intense drama. And for more true-crime coverage, check out our analysis of a shocking TV twist.
20/20 Season 49, Episode 3 airs tonight at 9 p.m. ET/PT on ABC.
