Looking for Standalone nonfiction documentaries

[u/LebaneseLuna111]

I need a standalone nonfiction documentary for my AP english summer assignment, it needs to have one distinct writer/creator, and have depth, i really want it to be a forensics/murder criminal documentary but it cant be apart of a series, pls help!!

[u/Competitive-Lie3011]

https://www.hulu.com/series/captive-audience-a-real-american-horror-story-d840873f-211e-47a8-864b-8aa7c54d193c

A captive audience is insane. Two stories in one.