In 1986, a 17-year-old boy named Daniel LaPlante broke into the home of a classmate, Tina Bowen, through a 6-inch hole in the family's crawl space. He lived there without anyone knowing for weeks, tormenting the family, stealing food, and sleeping in their cellar. After this disturbing series of events, he was imprisoned, and quickly released. He went on to escalate his criminal acts and found a new unsuspecting family to target. What he does next is so dark it inspired several horror movies with this true story that is scarier than fiction.

Sources:

https://allthatsinteresting.com/daniel-laplante

https://en.wikipedia.org/wiki/Daniel_LaPlante

https://www.distractify.com/p/boy-in-the-walls-true-story