WATCH: Real-Life Encounters with the Men in Black – Conspiracy About Alien Cover-Up Is Freakier Than the Movies

You may have found the Men in Black movies hilariously charming sci-fi adventures, but the real-life encounters people have had with this supposed super-secret agency are much more terrifying.

The “Men in Black” is a conspiracy that has circulated for decades—one of the first reports is from 1947— in which expressionless, sinister men in black suits persuade witnesses to keep their mouths shut about alien life. They contact people who claim to have seen UFOs, and those who have done extensive research on UFOs.

If the reports are true, the freaky “Men in Black” use various scare tactics to intimidate people into silence.

Get the details in the video above.