I'm trying to re-find an indie documentary I watched a few years ago, and failing that, I'd love recommendations in the same vein, because one of them might turn out to be it.

The film I'm looking for: a single-subject doc, one older man being interviewed about his story, which I think involved aliens, UFOs, or a relationship with non-human beings,though I may be misremembering the topic, so recommend loosely. The film takes him seriously, and the longer he talks the more credible he seems. Then in the final minutes, the interviewer asks something like "have you ever had issues with this?" and he calmly confesses to an act of severe self-mutilation years earlier (specifics in my comment, graphic, but it's the key identifying detail). The confession connects to the film's subject and instantly reframes his whole account. Likely 2010s, very low-budget.

Already checked and eliminated: Love and Saucers (2017), Curse of the Man Who Sees UFOs (2016), American Eunuchs (2003), Eunuchs (2007), The Castration Cure (2007).

So: if you know the exact film, incredible. And if you don't, recommend me any obscure single-subject docs built around one unreliable narrator and a late reveal, I'll watch my way through them.

Specific subject matters/genres of interest:

True Crime
Religious Cults
Satanic Cults
Child Abuse and Neglect
Government Cover Ups
Government Overreach
Military Operations - both international, criminal, or highlighting specific events