The Smiley Face Killers (2014)
80 Young Men Dead. 1 Missing filmmaker. 1 gang of serial killers.
A documentary about a theorized gang of serial killers that has been killing young men in the United States since 1997. It's believed they have murdered upwards of 80 college-aged men and do so by drowning their victims and then dump the bodies in nearby lakes and rivers for authorities to find.