On February 13, 2017, the senseless murders of adolescent girls Abby Williams and Libby German left the residents Delphi, Indiana shaken. Four years later, investigators are still searching for the killer using their biggest clues: a grainy picture and recording of his voice from the victim’s phone ordering the girls “Down the Hill.” Based on the blockbuster podcast, HLN investigates the evidence and clues to hunt for who killed Libby and Abby.

Hal LeRoy is hired as a tap teacher at Dawn O'Day's dancing school to give private lessons to female students. The school's manager, as well as some of his students, spreads false stories that Hal's lessons involve more than just tap dancing. He is fired and starts his own dancing school in the same building as O'Day's. Hal and Dawn now realize that their relationship was more than just business.

A dentist moves the drilling chair into a nightclub, treating his patient's pain with heavy doses of vaudeville acts.