Jeff Stanfield and Andy Shaver are joined by Erin Nimetz, a high school forensics teacher in Iowa Park, Texas, who teaches one of the most unique classes in education.

Her class covers everything you’d see in real police investigations—body decomposition, ballistics, blood spatter, fingerprints, and DNA. She also has a student favorite called “Serial Killer Friday,” where they highlight some of the most prolific serial killers in the United States.

They break down fact vs. fiction in the real Ed Gein case and the recent Netflix portrayal, the relationships many serial killers have with their parents, how killers are ultimately caught, the advancements in DNA testing, and the serial killer who once terrorized Jeff’s hometown of Wichita Falls.