When Chandra Levy went missing in May 1, 2001, there were no clear leads on her whereabouts. Friends, family and police scrambled to find the missing 24-year-old Capitol Hill intern. Considered a cold case by many, it was later revived after her remains were found in May 2002.

The producers of Investigation Discovery’s JonBenet: An American Murder Mystery and Casey Anthony: An American Murder Mystery take a deep dive into the Levy case, and sort through the twists and turns that complicated the search for the young intern’s killer.

Watch the exclusive clip above for a sneak peak at the gripping three-hour special.

Chandra Levy: An American Murder Mystery premieres Monday, September 4 at 8/7c on TLC. Viewers can watch an exclusive early debut online with the ID GO platform beginning Sunday, August 27.