Welcome to the first episode of Cosmic Crime! Today we're talking about the Zodiac Killer, his many letters, and even possible suspects. 

Sources:

https://www.history.com/news/the-zodiac-killer-a-timeline

https://www.zodiacciphers.com/melvin-belli-letter.html

https://www.history.com/news/could-any-of-these-men-have-been-the-zodiac-killer