In August 1975, 8-year-old Gretchen Harrington left her parent’s house in Delaware County, Pennsylvania, heading to summer vacation Bible school class. The church was less than a mile up the road, and she had walked it many times in the past, but something about this morning was different. Gretchen never made it. 

Two months later, her remains were found by a jogger in Ridley Creek State Park. Next to the remains were her neatly folded clothes, and her underwear was found hung in a nearby tree branch. The case went unsolved for decades and remained a haunting mystery in the community for nearly 50 years. Then, in 2023, there was a significant breakthrough leading to an arrest. But the man arrested wasn’t exactly the person you’d expect to commit a crime like this.