In February 1957 a young man named John Stachowiak was setting up several muskrat traps in a field near Fox Chase, PA. This wasn’t a particularly odd thing to do at the time, and this wasn’t the first time John had set up these traps, so he was just going about his business just like he would any other day. As John walked through the field he stumbled upon a large cardboard box. As he grew closer he saw that the box contained something unexpectedly horrifying - the body of a young child.

Listen to hear more. 

Sources:

https://www.nbcphiladelphia.com/investigators/philly-detectives-closer-to-cracking-boy-in-the-box-cold-case-mystery/3045401/

https://en.wikipedia.org/wiki/Boy_in_the_Box_(Philadelphia)