This week, Alicia and Lexie go back to the basics, discussing one of the pinnacles of true crime: serial killers. Alicia talks about America’s first serial killer, while Lexie discusses a mysterious and cryptic killer who may still be out there. Remember to lock your windows and lock your doors, because there are killers all around us.

The webpage about the Zodiac Killer: https://www.history.com/news/the-zodiac-killer-a-timeline