These are the videos, audio and sketches of the Delphi Murderer, as released by the Indiana State Police:
ISP: Delphi Homicide Investigation
Sources for the Episode:
The Delphi Murders — Unresolved
Everything We Know About The Unsolved Delphi Murders (grunge.com)
LIBERTY GERMAN — FBI
https://youtu.be/seWioxRdQ5k
HLN | "DOWN THE HILL: THE DELPHI MURDERS" PODCAST (downthehillpodcast.com)
Their granddaughter and her friend were killed 4 years ago. This is how they want you to help catch the killer - CNN