Jason Alley🏳️🌈🐻’s review published on Letterboxd:
A deeply troubling, disturbing, and unbearably sad documentary about the two 12-year-old girls who attempted to murder another little girl in the Wisconsin woods in 2014, as an offering to Slenderman. For those who don't know, Slenderman is an internet-born modern-day boogeyman who began life as a Photoshop gag, popping up eerily in the backgrounds of photos, and through the suggestive strength of the internet and the imaginations of children, morphed into something very "real."
This HBO documentary explores both the murder case and the Slenderman phenomenon itself, in detail. It's tough to watch at times, but fascinating and very worthwhile.